Happy Spring! While snow and cold will linger around the mountain for a bit, there​ is an undeniable warmth on the breeze. In the valleys, buds are bursting on trees, spring ephemerals are opening to greet the season, and we welcome all the new growth that this season brings!
At Cascadia Wild, we are celebrating the season with offerings of Spring Botany Classes and a new Tracking Challenge!

Our last tracking challenge was All About Squirrels, and here are the Tracking Challenge Winners! 

We've had a couple detections - and a couple possible detections - of target species this month!
We are excited to share this camera footage of one target species, the Sierra Nevada red fox:

We had two separate detections from this camera in the same night, a few hours apart. It is impossible to say whether this is the same individual without genetic evidence, but in both instances the fox in frame was cute and curious! If the sightings are of two separate individuals (of opposite sexes) we hope they are a pair. These images were taken during red fox mating season (January and February), and kits conceived during these winter months will be born between March and May. 

A Tracking Leader also recently found some tracks that could possibly belong to a Sierra Nevada red fox:

The trail pattern and size of these tracks are right on for fox tracks. However, these characteristics could also indicate that these tracks were made by a coyote or domestic dog. Unfortunately, due to less than ideal snow quality, it is difficult to look for more differentiating characteristics. In an ideal tracking scenario we would look at the shape of the negative space between the toes and heel pad. In domestic dogs and coyotes, this negative space is shaped like an "X". In red foxes, this shape is an "H". This print is a double register - meaning the hind foot has stepped on top of the front print, obscuring the details of the front track. If we could clearly see the front track, we could also look at the shape of the heel pad. In coyotes and dogs, this shape is trapezoidal; on foxes, the heel pad is more "squished" looking and can show up looking more like a horizontal line.

For now, we'll have to log this track as "canine" - no matter how excited we might be about the possibility of detecting our most elusive montane fox!

This tracker also found some potential Sierra Nevada red fox scat on the same survey: 

Small scat in the snow, with tape measure and a memo book for size reference. ​

One of our long-time volunteers also sent us these canine tracks, which may belong to another target species, the gray wolf:

When considering canine tracks that may belong to a wolf, the most important consideration is size. Wolf tracks are larger than coyote tracks and much, much larger than foxes. They are also much larger than most domestic dogs, except for large breeds like Great Dane, Mastiff, and Rottweiler. And so, determining who these tracks belong to requires differentiating between large domestic dog tracks and wolf tracks. 

Compared to domestic dog tracks, wolf tracks typically show a greater distance between the two outer toes (the interdigital space). The toes also point straight ahead instead of out, like they tend to do in dog tracks. Claws are long and pronounced, and thinner than in dog tracks. Wolf tracks also show a longer track with a proportionally smaller heel pad, and the track will show a downward angle in the direction the wolf is traveling, since they do not walk as flat footed as dogs do.

Like our possible fox tracks above, however, we don't have enough details to say for sure that these belong to a wolf and not a domestic dog. Details of the trail pattern and context would also be helpful to confirm an identification. Thus, we can only say that these are probable wolf tracks - but still an encouraging sighting nonetheless!​

We also detected another target species - and this time we are sure of it! These photos below show the fierce mustelid, Pacific marten.

The photos above are from three separate detections of marten at this same site, where they have also been detected throughout the season. Like the Sierra Nevada red fox, we can't know for certain if this is the same individual without genetic data. Martens spend the winter roaming and hunting alone, and the territories of males will overlap with those of females, but males defend their territories against other males. So if these are separate individuals, they may be polygynous partners.

This magnificent mountain lion was also documented: 

Another feline was also detected, the bobcat! The two white spots which visible on the back of their ears are thought to be false eyes which deter predators. Such distinctive markings (as well as the white underside of their tail) may also help trailing cubs follow their mother. 

Bobcats have classic feline tracks, with toes that sit in a curve above the heel pad, allowing the space between the toes and heel pad to form a C shape. With a length of 2 1/2 inches, these tracks are too small to belong to a cougar but are just the size you would expect for a bobcat. 

Coyotes were regular visitors by night and day, as they have been throughout the winter season.

​The camera sites also documented many, many deer, exemplifying a diversity of age and size found between deer and even within the same herd. 

Elk also roam the forest. They sometimes appear on our trail cameras solo, but they can appear in quite large herds, too - especially this time of year. 

Although snowshoe hares are common sights on our trail cameras, their quantity does not diminish their quality. 

We also detected striped skunks ​wandering by a couple of our cameras. 

We also detected a couple turkeys!

We hope you are able to get out and enjoy a leisurely, spring stroll through the woods, too.
Thank you for checking out our blog, and be sure to check back in next month for more wildlife news! 

In January, we introduced our first ever Tracking Challenge. Every few weeks this winter, we'll be sharing a new challenge and a series of posts to inspire you to explore your neighborhood, parks, or the mountain for signs of wildlife in the tracks and sign they leave behind. 

For our first challenge, we asked you for photos of tracks from any animal, no matter who made them. We received some excellent submissions! Here are the winners of the most distinct and the most clear tracks:

Left to right/Top to bottom: @buttsuponatime captured these perfect cat tracks! Carlene Blaich (Camera Crew and Tracking Team) found these exceptional snowshoe hare tracks on Mt. Hood. Kurt Zias wins honorable mention for some of the most clear marten tracks we have seen!

Left to right/Top to bottom: Kurt Zias captured these screech owl tracks - notice the mouse trail to the right! Heidi Perry and John Lehne (Tracking Leaders and Camera Crew) encountered a black bear on a mid-winter stroll on Mt. Hood. Honorable Mention: Ray Anderson and Kathleen Baker (Camera Crew) didn't need tracks to identify this backyard visitor!

And now the wildlife news you've been waiting for!
First off, we would like to share our target species sightings this month.

These two detections of Sierra Nevada red fox happened at night, about a week apart. They may be the same individual, or they may not. The same individual can look very different in different light settings, at different distances from the camera, and when detected in different modes of motion. Whether are not they are the same individual, both detections show the fox in question was very interested in something on the ground.

​Another camera also detected another Sierra Nevada red fox… Or did it?!

This individual is certainly a fox, but these photos were taken outside the expected range of Sierra Nevada red fox, as this site is stationed at a bit lower elevation than they have been documented in Mt. Hood National Forest. This site is also a bit higher elevation than we would typically expect to find a lowland subspecies of red fox. So who could this be?

The story of red fox subspecies and populations gets complicated. There are three different subspecies of red foxes in Oregon, the Sierra Nevada subspecies in the Cascades, the Rocky Mountain subspecies in the mountains of Eastern Oregon, and a lowland subspecies that is thought to be non-native in the sagebrush and bunchgrass country. In biology, the usual definition of a species is a group of animals that can breed with each other and produce fertile offspring (meaning their offspring can also have offspring). A group of animals is deemed a subspecies when they form a distinct group that is genetically distinguishable from the rest of the species. They are usually separated from the rest of the animals in the species by some sort of geographic or behavioral barrier. For example, the American black bear is a well known species of bear, but did you know they have 16 subspecies? These subspecies include the Florida black bear, the Louisiana black bear, and the West Mexican black bear, among others.

With our red foxes, what first seemed like three distinct subspecies, clearly separated from each other geographically and by differences in preferred habitat, is starting to become more cloudy. Rocky Mountain red fox have been detected close to Bend, Sierra Nevada red fox have been detected near the Willamette National Forest at lower elevations than they were expected to be found, the population on Mt Hood has been found to carry at least a few non-native genes, and now there is a mystery fox found in the no-man's land between where we expected to see Sierra Nevada and lowland subspecies. 

At this point, we are wondering: Is this individual in the picture above an outlier, either from the Mt. Hood population or from lower elevations? In California, Sierra Nevada red foxes have been documented traveling at lower elevations during dispersal, and dispersal would not be out of question for any fox this time of year. Or, does this detection hint that the range of either Mt. Hood's Sierra fox might be lower than expected, or lowland foxes higher than expected? 

Further documentation and obtaining genetic samples would be important in our understanding of home ranges, dispersal practices, and connectivity of Mt. Hood's Sierra Nevada red fox and other foxes in our region. We are excited to see what future documentations may tell us. For now, we wish this fox well on their way, wherever they may be going and whoever they may be. 
​
Our cameras also detected another canine - the coyote! 

These lovable canines remain active throughout winter, and we detect them all over the forest at all different elevations. However, with much of the plant matter being dead or dormant, coyotes have to rely on their skills as a predator and scavenger to find their next meal. With an impressive range, they can roam up to 40 square miles searching for food (though probably not in a single day!). Their thick winter coat helps them stay warm as they look for their next meal.

​Our next detection is a big predator, much like a canine, but in a much smaller package. Can you tell what species they are? They have a long body, short legs, and a fuzzy face, but don’t let that fool you…

We detected a weasel! What these small mammals lack in fat stores, they make up for with ruthless survival tactics. Weasels do not have a permanent den, but instead will use their small, long body to sneak into rodent’s dens, prey upon the rodent, and then use the rodent’s den for a nap. They curl up into a ball ball to conserve heat, and once they're rested, they set out again to find new prey. Due to their fast metabolism, weasels need to eat at least five times a day.
​
Now onto our feline friends. First up, the mountain lion! This is our first mountain lion detection this season, or least the back half of one.

Mountain lions do not hibernate or migrate great distances in winter, meaning they stay in the same general area year-round. With that being said, mountain lions are altitudinal migrants and follow ungulates to lower elevations during winter to retain a dependable food source. Much like us, throughout the snowy months, mountain lions will visually track deer using their footprints in the snow.

​Much like their feline cousin, bobcats also stay active all winter. 

For most of the year bobcats are crepuscular, but in winter they transition to being more active throughout the day to have a better chance of finding some diurnal prey.

Another important forest carnivore, black bear were detected! However, unlike the canines and felines of the forest, black bear are not typically active all winter. 

Not only were black bears detected on camera in January, but a camera crew also found their tracks while checking a different camera. It is very exciting to see these bear tracks in such beautiful detail! In fact, these bear track photos WON the Tracking Challenge for Most Unusual Tracks found on Mt. Hood! (See More Tracking Challenge Winners)

The first photo above shows the right front paw. You can make out all five toes, and below the toes are the palm pad. Black bears also have a heel pad below the palm on each foot, which may not always register, as is the case in this photo. The second photo above shows the left hind paw print. Many a bear track may have been confused with sasquatch (and vice versa!), and you can begin to see why. However, unlike human feet, the inside toe is the smallest and lower than the others, and the "big toe" is on the outside. The hind foot has larger palm and heel pads than the front, and, in this case, the heel pad registered. You can make out the claws and the folds of skin on this bear's foot, too! ​

Now you may be wondering: why is a black bear awake in winter? Bears are not “true” hibernators like many animals that burrow and hole up for winter. In the winter, bears, raccoons, and skunks hibernate by going into torpor, an involuntary state of reduced activity and lowered metabolic rate for energy conservation, but not into a total and extended dormancy like chipmunks, bees, toads, and so on. The overall time a black bear can spend in its den in torpor hibernation varies geographically from 0-7 months, and in Oregon it has been reported as usually lasting between 5-6 months. However, whereas true hibernators like ground squirrels need to wake up every week or so for sustenance and to pass waste, bears can stay in their torpor state without needing to wake for up to 100 days - or they can remain in torpor for much shorter periods. During warmer spells, black bears in torpor are more likely to stir and may emerge to forage, as perhaps was the case with this individual.

All these important carnivores around, and no wonder! We have also been detecting a lot of ungulates, deer and elk, who make up important parts of the diets of coyotes, mountain lions, and black bears. 

The camera sites captured several large elk herds on the move, and it's a sight to see! But have you ever wondered how to tell if you're looking at an elk or a deer? This elk above exhibits the thick mane and hump on the shoulders that is common in elk and absent in deer. ​Compared to deer, adult elk are also significantly larger, the hair of their mane and legs is dark, they have a large white rump patch, and their tail is short and completely white.

Top: A large herd of elk gather in a clearing.
​Bottom: An animated gif showing elk passing by in front of a camera. 

In Oregon, we have two subspecies of elk: Roosevelt and Rocky Mountain elk. We also have two species of deer, white-tail deer and mule deer, plus a subspecies of mule deer called black-tailed deer. White-tail deer have brown hair on the dorsal (top) surface of their tail, and mule deer have a white tail with a brown tip. The deer shown below are black-tail deer. You can tell where they get their name: the topside of their tails are covered with dark hair. All these deer also have white hair on the ventral (underside) of their tails - all the better to signal to the herd with! 

Snowshoe hare continue to be regular and welcome visitors to several camera sites.

There were also many squirrel sightings, like these western gray squirrels:

Did we go a month without a Douglas squirrel sighting...? Rest assured we did not!

A Douglas squirrel pauses on a log, obscured by fog. 

Trackers also encountered a lot of squirrel and snowshoe hare tracks on transects! These common winter wildlife species both can have bounding trail patterns, and learning to tell the two apart can be tricky at first. 

Now, this is one classic snowshoe hare print above! Notice the "T" shape made the two larger hind paw prints side by side, and the two smaller circular front paws prints one after the other. The mismatched size of the prints made by larger hind paws and smaller forepaws is a good characteristic to look for in hare tracks (but squirrels tracks have this characteristic too!).

​See the series of "T"s as the hare hopped along? This rabbit's stride (the distance between two prints made by the same foot) was 23" in this picture. Now, compare this to squirrel tracks:

​In the close up of squirrel tracks above, we see larger hind paws positioned in front of smaller fore paws, as with the snowshoe hare, but it appeared as a cluster of four prints rather than  a "T". Hare's front feet tend to leave a staggered "T" pattern, while the front feet of squirrels tend to land side by side. You can see this consistently play out in their trial pattern on the right/bottom above.

Below is the first raccoon that cameras have detected this season. Raccoons remain active year-round. Like bears, they do not fully hibernate, but are less active during the winter. Here's a cropped photo with the exposure increased - that striped tail is a giveaway!

Our final visitor this past month was the striped skunk! 

This month, we made the difficult decision to cancel our Group Tracking Surveys for the remainder of the season. As the pandemic numbers in our region continue to climb, and with the introduction of the new strain of coronavirus, and given the social nature of the group tracking surveys, we feel that it is in the best interest of the health of our volunteers, tracking leaders, and greater community. We are still encouraging self-organized surveys, and we are looking forward to a time when we can all reunite on the mountain and follow snowy trails together again soon.

​Meanwhile, as snows fall on the Mt. Hood National Forest, life continues on its winter course! Some of our most exciting wildlife finds are in the winter. Read on to find out about some of the wildlife documented on our Camera Surveys, Self-Organized Tracking Surveys, and other findings from our community while spending time in nature! 

Read more about the Wolverine Tracking Project

Over the past month, we have seen a flurry of inquisitive Pacific marten activity! Pacific marten are one of our four target species along with wolverine, gray wolf, and Sierra Nevada red fox. Marten are an indicator species of upper elevation forests - if the marten population is healthy, we can infer that the ecosystem as a whole is healthy.

Martens are active year-round and do not hibernate. Individuals readily adapt their patterns of hunting and resting, these camera sightings of marten have occurred both in broad daylight and in the dead of night. 

Top: A marten travels through the camera site in the snow. In this nocturnal marten visit, the animal appears much larger than in previous images due to proximity to the camera; this effect is known in photography as forced perspective. Middle:  A nocturnal marten leaves a trail of footprints in the snow past the bait box. Bottom: A marten hurries towards the bait box in a blur of motion. ​

This was a very lucky month indeed to have so many marten detections!

Coyotes are frequent visitors regardless of the season, as they also remain active year-round. They have been particularly interested in our bait this past month. 

There is no straightforward answer to why coyotes might like smelly bait, but we often detect them sniffing or rolling in bait that we find smells quite... well... off-putting. They could simply like the smell and want to put on a little "perfume", or it could be a more poignant survival technique. Researchers posit that, along with other reasons, they interact with smelly things in hopes that it makes them smell like larger animals which would thwart predation, or on the flip side, mask their own scent from the animals they hunt. Either way, many coyotes leave our camera sites smelling stinky! 

Even with the arrival of our first winter snows, black bears continued to surprise us with their visits on the east side of Mt. Hood. These photos were taken in late December, a little late in the season for black bear to still be active and not hibernating! Interestingly, black bears were also observed to be active in the same area in January of last year. 

As always, deer have also been abundant, especially at our lower elevation and east side sites, where deer tend to travel to during the winter. During the deer mating season (or "rut"), when these pictures were taken, we observed many handsomely antlered bucks trailing after does. Those antlers surely came in handy during clashes with romantic rivals.

In the winter, when male deer from the year prior are adult size and the antlers of mature deer have shed, it becomes much more difficult to distinguish male and female deer by sight. Winter coats appear at their fullest at this time as well. 

Snowshoe hares continue to be in their element as winter waxes on, keeping nocturnal activity interesting for the trail camera on otherwise quiet snowy nights

Another constant and lively presence was the western gray squirrel. They are the largest tree squirrel in Oregon and will remain active throughout the winter months.

Squirrels aren't always so cooperative for our motion-activated cameras, as this Douglas squirrel demonstrates:

Small, fast, and hardly visible in the shadows of a snowy landscape, a Douglas squirrel pauses under a log. 

Another track that was seen out on Mt Hood was left behind by a bobcat. Feline tracks will usually register four toes in the front feet and four toes in the hind feet and have a “direct register walk” gait, which means that the hind footprints usually land on top of the front footprints of the same side, and the footprints are evenly spaced. However, here, it looks like the bobcat had stopped walking and rested. The lower parts of the bobcat's legs left those long imprints in the snow. 

Some of the most common tracks found belong to snowshoe hare and squirrel.
​
These two animals have similar gaits, which makes sense seeing how they both hop through the snow, similar to the bounding gait of weasels and martens. The abundance of these tracks is a good sign for bobcats and other carnivores who stay active throughout the winter. Can you tell which tracks belong to which species?

The top two images are of squirrel tracks and the bottom two images are of snowshoe hare tracks. 

Off the mountain, in Portland’s Oxbow Park, some members of our community found some intriguing animal sign. This first image is of a bird's nest, well-weathered by the Portland rain. 

Next we have a two different kinds of woodpecker holes on a cedar tree. This pileated woodpecker hole is many years old and has scarred over. The little holes are due to a sapsucker that has drilled holes to bring sap out. We've never seen a sapsucker  drilling on top of an old pileated hole before!

Last, but not least, two volunteers found some striking sign. On their way out to a camera check they came across the bones of a small deer. These ungulates are important prey animals for many carnivores, such as canines, felines, and bears that roam the forest. These bones are also an important source of calcium and other minerals and nutrients for many wildlife of the forest, including other herbivores and omnivores.

Keri Sprenger, a long time Wolverine Tracking Project volunteer and current Winter Camera Survey volunteer, shared with us these gorgeous photos from her encounter with a Cascade red fox at Paradise Park on Mt. Rainier. Cascade red foxes are a subspecies of montane (high altitude) red fox which occupy the Cascade Range north of the Columbia River. Our target subspecies, the Sierra Nevada red fox, are only found in the Cascades and Sierras south of the Columbia River.

​This individual is a cross phase fox, one of three color phases which occur in wild red fox populations, along with the quintessential red phase and silver phase (black). Color phase is a lifelong, genetically determined coat coloration, also called a polymorph, and does not vary with age or season. Cross phase foxes are characterized by a band of dark fur running down their back and shoulders in a cross shape. This individual is further distinguished by a white sock on their left hind paw.

Cascades Carnivore Project, one of our partner organizations, has a project focusing on Cascade red fox conservation. Cascades Carnivore Project has highlighted a female Cascade red fox named Whitefoot, whom they first encountered in 2011. Could this be her?! If so, this would make this fox at least 9 years old - which is quite old for a wild, montane fox!

If you are ever on Mt. Rainer keep an eye out for this fox, and photograph from a respectful distance.

Thank you to Keri and all our amazing volunteers, your sharp eye for beautiful wildlife reminds us why this area of research is so exciting and important!

Due to the angle of the camera and the placement of the animals, these individuals were hard to identify, but here are a few of our justifications. Both these individuals have large feet and an overall gray, grizzled coat, and the second wolf has a significant amount of black in their coat. While there is overlap between wolves and coyotes in both paw size and coat coloration, coyotes more often display tawny coloration and smaller feet than gray wolves. Furthermore, the second wolf individual has a broader face and smaller ears in proportion to their face than we would expect from a coyote. Even with those justifications, this is still a really hard identification. Determining the differences between coyotes and wolves is difficult and is a skill that benefits from time and practice - if you would like to test your own skills, check out this quiz from ODFW! 

This is Cascadia Wild's fourth detection of gray wolves! Woohoo! Our first detection was in the summer of 2018, where we detected the White River breeding pair. This was one of the preliminary documentations of this pair in Mt. Hood National Forest. In the summer of 2019, we detected two wolves at two different locations. Oregon Department of Fish and Wildlife believes that these were also the White River breeding pair. This most recent detection was on the east side of the forest within areas of known wolf activity of the White River pack, so we can make an educated assumption that these individuals also belong to the White River pack. Furthermore, ODFW has also advised that their coloration is consistent with the other members of the White River pack. This is very exciting news and it confirms that our White River pack is still utilizing the same territory. 

This year we had seven detections of our target species Sierra Nevada red fox at two sites! We detected Sierra fox in both alpine and subalpine habitats. ​

Historically, the majority of our fox detections occur during winter. One previous hypothesis as to why we saw so many more during the winter was that they might be experiencing food scarcity and therefore more drawn to our winter meat baits. However, these numerous summer sightings molded a new working hypothesis - for two summers in a row we have detected Sierra fox at high elevations, which suggests that these foxes may be seasonal migrants, spending the summer months at higher elevation, where there are less trees for us to install our cameras, and descending to somewhat lower elevations during the winter months. We cannot wait to see what new information arises in future seasons! 
 
Along with our target species, we have also had a couple new detections this season!
We have never detected these species on our trail cameras before. 

We detected an ​American mink...

It is exciting to have so many new faces, but we always appreciate visits from our regular crew of Mt. Hood mammals. Documenting a wide variety of wildlife allows us to add to our ever-growing knowledge of the forest.

Some species were recurrent throughout the forest, and we received images of them from around Mt. Hood and the eastern boundary.

Our most frequent visitor by far was deer! Individuals or small herds were detected at 95% of all our camera sites, which means they were present at all but one site. Our camera footage allowed us to watch fawns grow up and antlers mature.

Their ungulate cousin, elk, were also detected on our cameras. They said hello to 8 of our cameras throughout the forest. ​

Another frequent visitor was coyote, who was spotted at 70% of of our sites. Consistent with past years, coyotes were prevalent all over the map. These opportunistic feeders can be found in alpine, subalpine, and montane habitats throughout Mt. Hood National Forest.

One of our favorite individuals this season spent a few minutes rolling around at one of our sites. 

Another regular was a fan favorite... the black bear! 

Let's not forget the rolling cubs! You should really watch those videos, they will brighten your day! 

We also detected a variety of squirrels all over the map, including the Douglas squirrel...

​Mountain lion was only detected on the east side of the forest this season, and only at two sites. This is slightly unusual because mountain lions were detected at 5 different camera sites last summer and 4 different camera sites two summers ago. While we can't draw any concrete conclusions from these observations, cougar distribution will be interesting to track in future summer surveys.

There were a handful of smaller critters who were only detected on the eastern side of the forest, including striped skunks.

We only detected California ground squirrels on the east side of the forest. We do not usually find California ground squirrels or striped skunks close to Mt. Hood, so we expected to detect them in this area.

​We also detected quite a few turkeys!

Besides the Sierra Nevada red fox, there were two species only detected close to Mt. Hood: the yellow-bellied marmot and the raccoon. 

We only detected the yellow-bellied marmot at high elevation. Marmots are only found in alpine environments, or sometimes just at the edge of subalpine. They are adapted to live in this environment, munching on alpine vegetation and burrowing in the talus slopes from the first sign of snow until March-May. ​

This is the only raccoon we detected this summer:

Along with camera data, we also accumulated a mountain of scat throughout the summer. Volunteers on our scat survey teams collect these genetic samples to help add to the narrative about our two target canines: gray wolf and Sierra Nevada red fox. 
​
Members of the Wolf Scat Survey Team surveyed 243 miles and found 10 potential wolf scats on the eastern side of the forest. 
Members of the Fox Scat Survey Team covered 54 miles and found 15 potential Sierra Nevada red fox scat samples, mostly around treeline of Mt. Hood!

The diameter, tapered end, and contents of the scat shown in the photo on the left suggest that this sample is potentially wolf scat. The white-ish hue is due to the scat's age. As wolf scat gets older, it turns from a darker brown to a more chalky white. Even though a scat sample may be older, it is still possible to extract a good amount of DNA for analysis. 

We look forward to seeing if any of the scats are a genetic match to their potential species and, if so, to the information that they can tell us about how the native ancestry, distribution, and habitat use of these two important canids. Our scat surveys will resume next summer, when the snows have cleared from the forest.

But, while the snows are here, the camera survey continues and tracking season begins!

As the first snows blanket Mt. Hood National Forest, a whole new wintry world of wildlife opens up to the Wolverine Tracking Project. While we are just at the start of the winter wildlife camera and tracking season, please enjoy a compilation of species and tracks observed so far, thanks to the efforts of our amazing volunteers. Look forward to more in the coming months!

Snow level can rise several feet very quickly on the mountain, and volunteers anticipate this by gradually raising the height of the bait box so it remains accessible to passing wildlife. 

Always a favorite, several charismatic coyotes interacted with camera sites both east and close to Mt. Hood. 

Coyotes are social and expressive. Always adaptable, coyotes can operate solo, as a mated pair, or as part of a pack. Another great adaptation for winter is their thick coats. In the photo directly above, notice that the snowflakes which have settled on this animal's pelt have not melted, it's insulating properties are an amazing adaptation!

 Cat lovers should love out next charismatic carnivore: bobcat. 

The effect of these glowing eyes, which you may have noticed in photos of your cat or dog, is due to a reflective layer called the tapetum, which gives nocturnal animals night vision by reflecting light back into their retinas. All the better to hunt with!

Bobcat's coats are both beautiful and functional, providing both camouflage and insulating protection. These big cats thrive throughout the winter months due to their thick coats. Their fur can become less brown and more gray during winter which allows them to better camouflage into their surroundings. ​

The heavily furred, large paws of bobcats also help them navigate the snow, kind of like snowshoes! 

Black bears were also an occasional visitor to several of our camera sites. 

Black bears are the only bear species in Oregon so it is very easy for our team to identify their pictures! It won't be long until black bears are in hibernation, so we will enjoy seeing them (from a safe distance) while we can!

Making jokes about weasels and their cousins, which scientists call mustelids, is a must for us at Wolverine Tracking Project (haha).

Though the weasel above is moving so fast the picture is blurred, the long body and dark-tipped tail are both characteristics of long-tailed weasels. ​

A tracker also detected the larger cousin of the weasel: the Pacific marten.

The Pacific marten is one of our two mustelid target species. The other is the wolverine, the largest mustelid cousin. While we are still waiting for wolverine to make a return appearance to Mt. Hood, we are always encouraged by the tracks of marten, who are an indicator of a healthy upper-elevation forest. All mustelids have similar footprints, characterized by five clawed toes and an inverted V-shaped heel pad.

No matter the time of year, it is certain that we will have some lovely photos of cervids (deer and elk, keep an eye out for flying cervids over the holidays!)

This male elk above is referred to as a "spike elk" meaning he has at least one antler without any branching. This is most common of younger males under six years old, although genetic, environmental, and health factors may also play a role in delayed, mature growth. In his prime, his antlers may grow as many as 6 or 7 branches, each with their own tips or "points." Male elk are called bulls, female elk are called cows, and their offspring are called calves.

Snowshoe hares are always entertaining visitors to camera sites and their tracks are seen more frequently by volunteers than almost any other species. 

Although a little difficult to visualize at first, snowshoe hare tracks form a "T" shape. This is due to their bounding gait, where the front feet land and the hind feet follow next, landing just in front of the front feet.

Striped skunks are our next species.

Next we have sightings of several squirrel species.

Western gray squirrels are the largest tree squirrel in Oregon. They are rivaled in size by the California ground squirrel (although the prize for largest ground squirrel in Oregon goes to the marmot!). Similar in appearance the western gray squirrel, the California ground squirrel is not gray but very subtly spotted. 

On the other side of size, Douglas squirrel is one the smallest tree squirrels in Oregon (Northern flying squirrels win for the tiniest tree squirrel). Chipmunks, on the other hand, are even smaller and are the smallest ground squirrels in Oregon. 

The squirrel tracks above belong to one of our non-hibernating squirrels of the upper-elevation forest: Douglas squirrel or Northern flying squirrel. They have a similar trail pattern as a snowshoe hare, thanks to their bounding gait, but they are much, much smaller!

Our only ground bird camera visitor was wild turkey. 

On our tracking surveys, trackers found these great sooty grouse tracks! Sooty grouse and turkeys are both important ground birds for our forest carnivores.

Thank you so much to all our camera crew and tracking teams for venturing out, helping to document the wildlife of Mt. Hood National Forest, and sharing your experiences with us!

Until next time, we thank everyone in the Cascadia Wild Community for their support and wish you all the best in the New Year!

Rain in the valley, snow on the mountain, and an undeniable bite to the wind!
Winter is just around the corner. Much of the forest is settling in for the long seasonal slumber. The trees and perennials are steadfastly storing their summer bounty below ground, seeds are stored away for spring growth, and animals are changing their behaviors in preparation for the snow.
Whether you are one to spend these cooler days like black bears and other forest hibernators, tucked away under blankets or by the fire with a book, or if you are one to brave the elements - we hope you are looking forward to the new season as much as we are!

Both our summer camera and scat surveys are coming to an end, but we are still busy collecting photos and genetic samples from the forest. As we transition to winter, we are excited to share some of our final findings from the summer season with you.

The first images we want to share with you are of one of our striking target species, the Sierra Nevada red fox! 

These are some of best Sierra Nevada red foxes photos we have ever received! You can clearly see the red coat of this fox in the morning light, as well as Mt Hood in the background. We have detected Sierra fox at this alpine site consistently throughout the summer, although the photos have so far only been at night when foxes are more active. This camera site has been taken down for the winter, so these images were a wonderful send-off from such a beautiful site. During the winter, we much more commonly detect Sierra foxes below treeline than in the summer, and we hope to get to see this fox again soon! 

We also received many, many photos of coyotes this season, but none quite so investigative as this individual... 

This individual rolled around this rock face for just under a minute. Mammals (from coyotes to bears to ungulates and more) use scent as a way to communicate. Our smelly camera sites provide a great opportunity for communication from rubbing parts of their body or by marking with urine and scat. The most clear kind of scent communication is when the animal is attempting to deposit its own scent on something else, and the animal will roll or rub its scent glands onto a variety of surfaces. Animals will scent mark with all parts of their body, including their backs, necks, heads, and faces.

However, sometimes mammals will also try to get the scent from something else (usually another animal) deposited on itself. When an animal covers itself in the scent left by other animals, this isn't exactly communication. We actually don't know exactly why they do this! But we speculate that this occurs when an animal wants to mask their own scent, perhaps to hide their scent when they hunt prey. We suspect this is what this coyote was doing. Maybe this individual was about to go off and find itself some dinner! 
​
The individual made sure to come check out the camera after they had a thorough roll around. Check out the whole video here.

We also received many images of black bears this past month, including this individual that had a similar reaction to the bait as the coyote.

This bear also seemed intrigued by the bait, but instead of rolling their entire body in it, they rubbed their head against the smell. In general, bears are much more conservative rollers than coyotes. Where a coyote might roll with enthusiasm, a bear might be content with a cheek rub. 

Along with canines and black bears, our cameras also detected some felines, including a mountain lion.

And some bobcats.

Both of these big cats do not hibernate and will continue to hunt throughout the winter. Both cats are generalists, meaning they can prey on a wide variety of animals, so their diet will shift to prey that is more attainable throughout the winter months. While many small mammals such as ground squirrels and marmots hibernate during winter, other mammals such as snowshoe hares and mice stay active - great food for our bobcats, and they are content to stay at higher elevations throughout the winter where this food is plentiful. Ungulates (deer and elk) will also stay active through the winter, though they head to lower elevations where there is more opportunity to forage. Mountain lions, who prefer ungulates over other foods, also follow them down the mountain.

Speaking of ungulates, many deer walked past our cameras. Bucks, does, and fawns all made an appearance. 

For most of the year, elk stay in same sex groups, or groups composed of cows and calves. Throughout the year these herds can get very large, sometimes with more than 200 members. However, from August to early winter dominant bulls will follow groups of cows. These harems are formed during mating season, and will have 5 to 20 cows and one or two bulls. A dominant bull is a  bull that is in their prime, somewhere between about 5-10 years of age. Bulls breeding success will peak at age 8. These bulls will protect their harems from other bulls. Older and younger bulls will stay on the periphery of these large harems or find their own harems closer to winter.

Our cameras also detected some mammals, and a first!! 

For the first time in Cascadia Wild history, a camera detected an American mink! Minks are semi-aquatic and feed on a diet consisting of rodents, fish, frogs, and birds. They are most often nocturnal and will almost always look for food at night. Minks do not hibernate, so this new friend will be looking for food all winter (when they're not bundled up in their burrow!).

Our cameras also detected some of our usual small mammals including skunks, golden-mantled squirrels, western gray squirrels, and a Douglas squirrels. 

The Douglas squirrel (bottom right photo) has a much shorter tail than is expected. Though tails serve a few functions, one of the most important functions of a squirrel tail is balance. Squirrels use their tails for balance as they scamper through the brush or jump from tree to tree. This partly explains why tree squirrels tend to have longer tails than ground squirrels, and flying squirrels tend to have even longer tails than tree squirrels.

It is not unusual for a squirrel to lose part of their tail. Squirrels have many natural predators, such as snakes, hawks, raccoons (and more) who will bite down on a squirrel's tail, and squirrels can also lose part of their tail to snags in trees or fences. When met with a predator or snag, a thin covering of tail skin and muscle can be torn away without life-threatening impacts. ​

Volunteers have been hard at work on scat surveys this month! So far this season, volunteers have collected at least 9 potential wolf scat samples and  15 potential fox scat samples!

Here is some potential wolf scat from a recent Wolf Scat Survey. 

This scat displays the canine characteristics of shape and contents, and it also is indicative of fox scat due to its smaller size: under 1/2" or the size of your pinky.

Both scats, along with the several others that volunteers have collected over the season, are potentially valuable sources of information about these important canine carnivores that call Mt. Hood National Forest home. While the snows on the mountain may have concluded our alpine fox scat surveys, there may still be a few more good weeks of wolf scat surveys left. As we head into winter, though, we will be collecting less scat and transitioning to seeking out tracks. Lots to look forward to! 

Read more about the Wolverine Tracking Project

And, don't forget about our Community Clubs! 
​

• Tracking Club has been back on since the summer, and the next club meets on Sunday, October 25, 9:00 am-12:00 pm at Oxbow Regional Park. With seasonal rains just beginning, some of the best tracking can be this time of year!
• Nature Book Club will be meeting Tuesday, October 27, 5:30 pm-7:00 pm to discuss Feral: Rewilding the Land, the Sea, and Human Life by George Monbiot. Contact us for the meeting link.

With the delayed reopening of Multnomah County, our camera surveys this summer have been limited to only a handful volunteers and staff. Many of our cameras have not been checked since mid- or late-August, as well, due to the wildfires and closures in Mt. Hood National Forest. We can't wait until the forest reopens and we can see who's been visiting our cameras in the past month(s)!
In the meantime, we have some photos to share with you from the footage collected in August. 

To start us off, we have one of our target species, the Sierra Nevada red fox! 

This is the third detection of a Sierra Nevada red fox at this camera site this year! 

Cascadia Wild has been been collecting data about the Sierra Nevada red fox since their "rediscovery" in Oregon on a Cascadia Wild trail camera in 2012. Most of what we know about Sierra Nevada red foxes come from a population living in Lassen, California, as this is the longest standing red fox study. It is thought that the known California populations together comprise less than 50 individuals. Oregon population numbers are largely unknown and speculative. However, with every passing season, Cascadia Wild and other state, federal, academic, conservation, and nonprofit organizations continue to study red foxes throughout Oregon and add to our growing knowledge of them in the region.

In Oregon, the Sierra Nevada red fox was classified as a Data Gap Species and has since been designated as a Conservation Strategy Species by Oregon Department of Fish and Wildlife. The US Forest Service has designated the Sierra Nevada red fox a sensitive species in Oregon. 

Another canine visitor to our cameras was the coyote. 

Both Sierra Nevada red foxes and coyotes are opportunistic eaters, and they both prey on small mammals such as rodents and squirrels, and also eat berries, insects, and carrion. Some studies suggest that they have a competitive relationship with each other due to their similar diets, however sometimes coyotes will prey upon red foxes, while red foxes can benefit from the carrion left behind by coyotes. More research needs to be done on the Sierra Nevada red fox in our region to allow for a more comprehensive comparison of these two canines diets and their relationships. 

​Another opportunistic carnivore that visited our cameras was a black bear.

Just like canines, black bears eat small mammals, roots, berries, and insects. They also eat grasses, fish, large mammals, carrion, and can develop a taste for human garbage - a good reason to always pack out what you pack in and secure your food and trash.

While black bear activity is not new to our cameras, we have been detecting much more rolling than usual! First, our camera detected bear cubs rolling in bait.

And then, this past month our camera detected an adult rolling in bait. 

We often see canines, and even the occasional feline, rolling in our very potent commercial scent bait - usually to mask their scent from other predators or prey, or to perhaps add their scent to the potpourri as a way of communication. While black bears are known to communicate with scent by rubbing and scratching on trees and posts, it is not very common for them to roll. In past seasons, we've used a particular stinky blend of bait, called gusto, as a broadcast scent lure. This would hang in a canister from a tree, and the canisters were often found torn off the tree and smashed to bits. It seems the bears could not keep their paws (and jaws) off! This year, we are using gusto as one of our baits instead. The bait is applied underneath a log or protected area, and it seems possible that is has the same strong appeal.

Our cameras also detected a couple of big cats this past month, like these bobcats.

And the other big cat detection was of a mountain lion. 

Though both big cats roam the forest, there are many key differences between them. 

Another regular on our trail cameras is deer. We have received quite a few tender photos of does and their fawns.

According to the Washington Department of Fish and Wildlife most does and bucks do not live more than five years and very rarely live more than ten years. A doe can start reproducing at the age of one and can give birth to one or several fawns a year, meaning a doe will reproduce regularly throughout her life. A doe and her fawn nurture a close relationship until the fawn is weaned. In this approximately three month period the doe will carefully protect her young from predators and fawns will spend most of their time hiding in the woods or brush. Their mother will visit them throughout the day for feeding. Most fawns are born in spring, so by now most fawns are completely weaned and beginning to be less reliant on their mother. Their coats at this time will have lost their spots, in exchange for the coat of an adult. 

Another ungulate friend visited our cameras this month - elk!

Deer and elk are both ungulates with many similarities including their digestion process and reproductive cycle. Both are ruminants, meaning they have a four chambered stomach with bacteria which allows them to digest nearly all plant matter (lucky them!). They also both mate in the fall and fawns are born in the spring. However, elk are much larger than deer and communicate louder and more distinctively than deer. And while they can both eat a wide variety of plant matter, elk are grazers and deer are browsers. Elk will feed on a variety of grasses whereas deer prefer woody plants, but will also eat shoots, leaves, and grasses. 

As mating season approaches, elk's antlers will reach full maturity and they will shed their antler velvet. 

The bull in the image above seems to be shedding his velvet (indicated by the loose skin-like material hanging on his face). And there are a pair of eyes behind him... just in time for spooky season! 

We also had a fair number of small critter visitors, such as a striped skunk...

...as well as a rabbit...

...a yellow-bellied marmot...

...and a couple golden mantled ground squirrels. 

Though they are small, mammals like skunks, rabbits, and marmot are important to their ecosystem. They act as pollinators, seed dispersers, support forest regeneration and maintain forest health, aerate soil and allow for increased plant diversity, provide food for carnivores, and enrich our recreational experience.

And the final trail camera photo is a Cascadia Wild first, and just in time for Halloween!
Our camera detected bats! 

Out of the 1,300 species of bats in the world, Oregon is home to 15, eight of which are ODFW Conservation Strategy Species. Bats can range greatly in size and weight, and not all species echolocate, but all species are important pollinators, seed dispersers, and, with the exception of vampire bats (which are not in Oregon), are insectivores.

Let's start off with some big scat! 

As we discussed previously, black bears are opportunistic eaters, meaning that they can adapt to what food is available. Based the purple color of this scat, it looks like this bear came across some huckle or blueberries! Berries make up a large portion of a black bear's diet, especially in late summer when the forest is bursting with them. 

One of our volunteers conducted a Complete Species Wolf Scat Survey in which all mammal and bird sign encountered are documented, in addition to that of our target species: wolves, Sierra foxes, marten, and wolverine. They found a variety of interesting sign! 

This is a dead tree trunk that was torn open by a black bear. In late summer, bears are trying to put on as much weight as they can before hibernation, so all food sources are sought after. Deadfall can be a wonderful source of insects for these omnivores! Though they have the characteristics of a ruthless predator, like strong curved claws and long canine teeth, black bears seldom use them for anything more than climbing trees and consuming insects and fruits. Black bears use both their claws and their canines to break open insect-ridden logs in late summer, to supplement their diet of berries and nuts. 

The forest is full of sign that tells the story of the animals that live there, for those who take the time to look! Whether on the mountain or in your own backyard, we hope you are enjoying the abundant life all around you.  Until next time!

Our 2019-2020 Annual Report is out! Check it out for a summary of all that we were able to accomplish during the year, from our annual budget to our classes, clubs and events, to community engagement.

Also, in case you missed it, our Wolverine Tracking Project 2019-2020 Report was also released a few months ago. This report covers all the findings of the Wolverine Tracking Project. Check it out or read our end of winter blog to see detailed photos and findings.

A big thank you to everyone who made 2019-2020 a success!

Tracking Club met at the end of July for the first time since February, and it was great to get our noses to the dirt again! Tracking Club is an informal gathering for beginners and experts alike; all are welcome. Join us the last Sunday of each month at Oxbow Park.

 Nature Book Club is held online the fourth Tuesday of every month. Participants come together to discuss the ways nature writing shapes our experiences and relationship with the natural world. Our next meeting is August 25 to discuss Rare Bird: Pursuing the Mystery of the Marbled Murrelet by Maria Mudd-Ruth.

While we are eagerly awaiting a time when it is safe to send all our camera crew volunteers to the field, a handful of volunteers have been helping maintain our 16 wildlife cameras stationed around Mt Hood National Forest. Like seasons' past, we have installed cameras to focus on our target species: Sierra Nevada red fox, gray wolf, Pacific marten, and the ever elusive wolverine.

This summer season has delivered a wide range of wildlife, including one of our target species, the Sierra Nevada red fox! 

The Sierra Nevada red fox has been one of our target species since they were detected on our cameras in 2012. We frequently detect Sierra Nevada foxes in the wintertime at our cameras stationed just below the tree-line. We have detected them during the summer as well, just much less frequently. We are lucky to have a couple of detections this summer. These sightings were at high elevation, which is fitting since Sierra Nevada red foxes have only been found above 4,000 ft in Oregon so far, but these sightings occurred even higher than that. This is valuable information for us, because we initially hypothesized that we were more frequently detecting Sierra Nevada red foxes during the winter because they were experiencing food scarcity and therefore would be more drawn to our meat baits. However, now that we have detected individuals at high elevations for two summers in a row, this could suggest that these foxes are migratory and spend the summer months at higher elevation and the winter months at lower elevation.  

Foxes are opportunistic and will eat berries, plants, insects, and even carrion. But the primary diet of Sierra Nevada red foxes is carnivorous and is mainly comprised of small rodents. Because of this, Sierra Nevada red foxes tend to be most active when rodents are: at dusk and during the night. Perhaps that explains why our cameras detected these individuals at night! 

Our largest regular visitor this season has been the black bear. 

Despite their name, not all black bears have a dark black coat. Their coats can range from light brown to jet black and some individuals can even have blonde or white coats! Black bears are more commonly cinnamon, blonde, or brown in the west than other parts of the country - researchers think this might be to help them blend in with the abundant meadows we have out here. However, about 70% of black bear individuals nationwide have black coats. 

Black bears are typically solitary animals, with the exception of occasional social groups or a mother bear and her cub. A cub litter can usually range anywhere from one to four, and cubs will typically stay with their mothers for two years, sometimes longer, until they are ready to be on their own. Here, our cameras spotted a mama and her yearling walking around the site. 

Our feline friend the bobcat walked through our sites on several occasions. 

This cat is named due to its tail, which appears to be "bobbed". Bobcats are elusive and nocturnal, thus are rarely spotted by humans. Luckily our camera's have detected a few individuals this season! 

Another one of our Mt Hood felines, the mountain lion, stopped by.

​While it may look like the mountain lion is smiling for the camera, it is actually performing a flehmen response. This behavior can be identified when a mammal curls back its upper lip and exposed its front teeth. This allows for pheromones or other scents to be transferred to the vomeronasal organ, which is located above the roof of the mouth. A mammal may perform the flehmen response when it's investigating new odors or tastes. This image is particularly cool because the flehmen response is most often observed in ungulates, so observing it in a big cat is a treat!   

One of the most common visitors to our sites are coyotes. 

Coyotes are one of more investigative visitors to our sites, and are often detected sniffing all around the site. Our cameras also often see them marking the site, either by feces, urine, or rubbing. Above are images of coyotes rubbing their backs on the ground, as well as sniffing their surroundings. The last image features a coyote pausing with their paw raised, which is indicative that they were concentrating on something in their area. Perhaps they were looking for the source of what they were sniffing! 

Another common visitor to our sites are black-tailed deer. Now that summer is in full swing, our cameras have been detecting does with their fawns. 

Fawns are characterized by their brown coats with white spots, this pattern helps them camouflage into tall grass and brush. Fawns are born in the late spring and will weigh between 6 and 8 pounds. It is common for a doe to give birth to twins, though a single birth is not unusual. Does and fawns can create family groups which are led by the oldest mother, while bucks will not help raise the fawns and instead create bachelor groups for the summer.

Bucks can be distinguished from does due to their large antlers. Antlers are actually an extension of the deer's skull and are usually only found on male deer. As growth occurs at the tip of the antler, cartilage is added which is later replaced by bone tissue. As the antler is growing, it is covered with a vascular skin called "velvet". The velvet is almost fuzzy in appearance. The velvet supplies oxygen and nutrients to the growing bone. According to a Cornell University Press publication, deer antlers grow faster than any other mammal bone! Once the antler has reached its ultimate size, the velvet is lost and the bone dies. This dead bone is the most mature phase of antler. ​

On average larger than black-tailed deer, our cameras also often detected elk. 

Elk are one of the largest species within the deer family and are one of the largest terrestrial animals in North America. Bulls are distinguished by their their antlers and loud vocalization consisting of screams known as bugling. 

Beloved for their tall ears and endearing hop, rabbits are no strangers to our sites.

Rabbits and hares are common and important prey for larger mammals, such as bobcats, foxes, coyotes, and even birds of prey. They have adapted to moving swiftly through forests to avoid being an easy meal, finding a wide range of plant matter for their own snacking. As a food source for larger carnivores and as avid herbivores themselves, rabbits play an important role in the ecosystem.

The Mt Hood forest is full of a variety of small rodents, and though they have somewhat similar characteristics, each species is physically and behaviorally distinct. This season we have received images of the Douglas squirrel, the northern flying squirrel, the golden-mantled ground squirrel, and the yellow-bellied marmot. Douglas squirrels are tree squirrels with bushy tails, brown coats and tan bellies, though they appear very dark in black and white photos. They are one of the smallest squirrels in Oregon and are active year-round during the daytime. The Northern flying squirrel are also tree squirrels with dark coats, but their bellies are white and their tails are not as bushy; their tails often appear flat in our photos. Weighing under five ounces, they are the smallest tree squirrel in Oregon. Like the Douglas squirrel they are active year-round, except they explore their surroundings during the night. 

 As opposed to tree squirrels, who dwell in trees, ground squirrels spend most of if not all of their time on the ground. In contrast to the Douglas squirrel and Northern flying squirrel, the golden-mantled ground squirrel is, as the name suggests, a ground squirrel. Golden-mantled ground squirrels are active during the daytime in warmer months, they hibernate throughout the winter season. Their body size and markings lead them to be commonly mistaken for chipmunks, however they are distinctive due to their lack of face stripes and singular lateral white stripe bordered by two black striped on each side of their body. ​

Though significantly larger than the previous species, the ​yellow-bellied marmot is also a ground squirrel. Like the golden-mantled ground squirrel they are also winter hibernators and are actually one of Oregon's longest hibernators, resting from as early as July through April or May. They are our states only marmot and one of the largest squirrels in Oregon. They can be identified by their brown or golden coloring, squat legs, and somewhat bushy tail. ​

Striped skunks are omnivorous, meaning they eat both meat and plant matter. Their diet influenced by the seasons: in the warmer months their diet is primarily insectivorous when grasshoppers, beetles, crickets, and other arthropods are abundant. During colder months the switch to a more carnivorous diet and they will eat smaller mammals, hatchlings, and eggs. 

​One of the most exciting detections was of a Greater sandhill crane. 
There are actually two individuals in this photo, can you spot the second one?

This species is Oregon's tallest bird and is characterized by its red crown and white cheek patches, which contrast with its light gray or brown body. There are only a few pairs of sandhill cranes nesting in the east Cascades, and this bird is one of ODFW's Conservation Strategy Species, so this was a very exciting — and lucky — sighting

Members of our gray wolf and Sierra Nevada red fox surveys have been busy hitting the trails and forest service roads to search of our two canid target species. So far, we have 10 probable Sierra fox scat samples and 8 promising gray wolf scat samples! This genetic data is invaluable in helping us learn about the population, native ancestry, and habitat use of these canids. Combined with the long-term data collected on our wildlife camera and winter tracking surveys, the scat surveys help to tell an overall story of the forest ecosystem that these rare carnivores call home. 

Identifying scat can be terribly tricky!
There are some traits common to all canine scat such as 

• Tapered ends 
• Twisted body
• Easy to dent with a stick when fresh
  
• Since canines are omnivores, their scat can contain ​fruit, plant matter, hair, and/or bone 

However, our target canines have more specific characteristics ​

Comparing these two samples, they are similar because are both twisted in shape and contain both hair and plant matter. However, the potential gray wolf scat is larger overall than the potential Sierra Nevada red fox scat.

​For those of you who are unfamiliar, this is what GPS data looks like from our scat surveys. This is a “track” or GPS route from a recent survey. Note the CaW (Cascadia Wild) shout-out!

Thank you to all our volunteers who keep our wildlife surveys going strong and to our community for your valuable support. Until next time, we hope to see you out in the woods and enjoying some PNW sunshine!

The days are getting warmer and longer, the birds are returning from winter migration, and animals everywhere are bringing a new generation of wildlife into our forests...needless to say, winter has ceased and made way for spring, marking the end of our winter survey season. While this season may have been unexpectedly cut short, the Cascadia Wild team of volunteers and members still managed to bring in countless wonderful photos and record many wildlife tracks while it lasted.

Please enjoy this season recap of the Wolverine Tracking Project's Camera and Tracking Survey highlights!

Late winter/early spring is the perfect time to get to know our local songbirds, and our Bird Language Series is a great opportunity to do so! Beyond bird identification, this 8-class series in field and classroom explores what the postures, song, chatter, and even silence of birds can tell us about what's happening on the landscape  - the location of predators, presence of other humans, and even our own awareness and mindset. Starting March 22. Read more. 

Check out our other upcoming classes, like
Advanced Sign Tracking (March 7)
Intro to Wildlife Tracking at Hoyt Arboretum (March 21)
and more!
​See all upcoming Classes.

There has been an ​abundance of wildlife sightings on Mt. Hood this past month, including our beautiful and elusive target species: the Sierra Nevada red fox!

The Sierra Nevada red fox was first confirmed on Mt. Hood in 2012 by Cascadia Wild's trail cameras under the Wolverine Tracking Project. Despite their small numbers, attempts to list these animals as threatened or endangered have failed in recent years due to the lack of information on their populations and whether or not they are interbreeding with other red fox subspecies.
​
Cascadia Wild uses data collected on this subspecies to aid researchers and conservationists in their attempt to protect the Sierra Nevada red fox. Due to their elusive nature, there are many questions left to be answered, such as their population sizes, distribution, genetics, and ecology. Data is gathered by Cascadia Wild through our camera surveys, winter tracking surveys, and summer scat surveys.

These foxes are always an exciting find, and they have graced our higher-elevation cameras a handful of times this season. Their curiosity of the bait trees are hard to misinterpret, and the body language they exhibit is not unlike that of our canine companions.

Some fun facts...

• The Sierra Nevada red fox is considered to be one of the rarest mammals in North America.
• These foxes are generally solitary animals and tend to be nocturnal, doing a majority of their hunting at dusk or in the night.
• Their habitat tends to vary in elevation from 4,000 ft - 12,000 ft. They are thought to be seasonal elevational migrants, moving to higher elevations in the summer months.

Coyotes are generally monogamous and tend to maintain pair bonds for life. Their litters are raised by both parents and parenting duties are also frequently taken on by older siblings in the family group. They travel both alone and in packs usually consisting of an alpha male and female, their relatives, and some members of other families. 
​​
Coyote packs tend to live in territories that they will defend against neighboring packs. They mark these these territories with scent markings such as urine, feces, and rubbing against objects like trees.

Some fun facts...

• Coyotes can run up to 40 mph.
• Coyotes are very strong swimmers.
• On occasion, coyotes will interbreed with wolves, creating a hybrid species referred to as a "coywolf".
  
• These canids make their homes in forests and mountains, wetlands, meadows, and even urban cities.

Other carnivorous mammals caught on our cameras this past month include the stealthy bobcat​.

Bobcats have a wide range of diet, including small mammals such as hares, squirrels, birds, and even the occasional larger game like deer. Bobcats use their stealth to hunt, remaining hidden to their prey until they attack with a leaping pounce of up to 10 feet. ​

These felines are the most common wildcat in the United States, yet they seldom cross paths with humans due to their solitary, nocturnal, and elusive nature.

A common meal of the above carnivores are the snowshoe hares.

Snowshoe hares have evolved to molt to a white coat for the winter to match the snowy backdrop, and molt back to brown once the snow melts away; this way, they do not stand out like little lightbulbs in the dark forest, and they are able to camouflage with their environment year-round. However, as demonstrated above, sometimes these color changes do not happen as they should. As the global climate changes, the presence or absence of snow at different times of the year becomes less predictable, and hares are sometimes unable to quickly change their coat to match - a phenomenon biologists call "camouflage mismatch".
​
Abundant in our forests, the snowshoe hares are nimble and fast; a necessary advantage as a favorite snack of bobcats, coyotes, foxes, and even some birds of prey. These hares have large, fuzzy feet that help them to  effectively navigate their snowy habitats, similar to the snowshoes of our volunteers.

Other herbivorous inhabitants of our forests include the black-tailed deer​.

Black-tailed deer inhabit the forested mountains and foothills near the Pacific coast. They are resident animals, meaning they do not migrate south, but do tend to move to lower elevations during the winter months. Their home-range consists of about 3 square miles of land, yet they tend to travel in solitude - aside from the small family groups of mothers and their young, or the bachelor groups of bucks formed during the summer months.
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You can find more information about deer in our last blog.

A flehmen response is a reaction to intriguing smells - commonly urine - where the upper lip of the animal is curled back to expose the vomeronasal organ to the scent in order to get a good whif. In fact, the word "flehmen" comes from the German verb for "to curl". However, this response is not just "sniffing" - it may be compared to sniffing in high resolution.

This black-tailed deer doe is seen exhibiting a flehmen response, likely in response to the urine of another deer. You may have observed a cat or another ungulate like a horse displaying this same behavior before. While not uncommon, a flehmen response is more frequent in black-tailed deer males than females. In fact, there seems to be an annual cycle for flehmen responses in black-tailed deer; observations are much more frequent in the winter during breeding season as deer are on the lookout for a mate.

​Also seen is a less common winter visitor: a striped skunk.

Striped skunks tend to hole up for the winter; however, similar to bears, they do not undergo true hibernation. Instead, both skunks and bears exhibit something called torpor: a state of decreased metabolic and physiological activity, allowing an animal to survive through periods of food shortages. ​More information on torpor can be found in our last blog.

Though skunks tend to be known for their foul smelling spray, they are actually docile animals that will happily leave humans alone and go on with their day. Their spray defense is typically only used as a last resort; if they feel threatened, they will first try to run away from the threat. If that doesn't do the trick, they may arch their back and raise their tail as a warning. Only if they still feel threatened will they release their spray, which can reach a whopping 12 feet.

Before we review some of the findings from our tracking surveys, we want to extend our congratulations to our trackers, tracking trip leaders, and greater tracking community that came out for our CyberTracker Track and Sign Evaluation! For two days, participants were taken to various locations in Mt Hood National Forest and asked questions about the track and sign found on the landscape, such as: who made this track or sign? how was this animal moving? what was the gender of this animal?
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​At the end of the weekend, everyone who participated received internationally recognized wildlife tracking certification! Six out of ten participants even received Level 3 Certification! Thank you to David Moskowitz for leading the evaluation on behalf of CyberTracker, and everyone who came out to share their knowledge, perspectives, and tracking skills with us - we are truly impressed by our community!
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We found a lot of great tracks and sign, and here are some of the highlights from the course:

It's been a great month for our tracking surveys, too! This February we hosted our annual overnight tracking trip in the Tilly Jane area.

The group followed animal trails by day before setting up snow shelters and camping under the clear skies of a full moon. The conditions for a great time could not have been better!

Tracking surveys have also been finding a lot of great track and sign. One of the most common signs on the winter landscape is snowshoe hare. 

We have also been finding a lot of squirrel tracks, and the similar tracks of their carnivorous forest counterpart, weasel! Can you tell the difference between squirrel and weasel in the tracks below?

In our last blog, we discussed how squirrel and hare tracks can be distinguished from one another, but weasel and squirrel can be even more difficult to tough to tell apart. Also commonly found with a bounding gait, weasel tracks can be of similar size, too. One way to tell these apart is by the toes. Squirrels have five toes on their hind feet and four in front; weasels have five toes all around. Squirrels will also have longer toes than claws (for grabbing onto food and tree limbs) and weasels will have longer claws than toes (for grabbing onto their forest prey). Compared to weasels, the first and fifth digit of a squirrel's hind toes are splayed more to the side, while the middle three are kept closer together and pointed more forward, in a 1-3-1 orientation. Weasel toes, on the other hand, will often be more evenly spaced.

Another common track has been the deer mouse. These tracks would be difficult to discern if not for their size! Some of the smallest tracks in the forest, you would be very lucky with excellent conditions if you were able to make out toes in their prints. 

Each of these photos show the same animal performing the same hopping gait. However, the animal is making its way through two different qualities of snow. The first photo shows each foot clearly defined as the animal almost post-holes through snow that has been made more rigid through melting and refreezing, each foot clearly showing where it broke through the surface. In the second photo, we can see the tracks less clearly as the snow hasn't gone through the same weather and is more easily disturbed, yet still light and fluffy enough to pick up a foot drag.

We have also seen a lot of sign from our forest carnivores. One thing all our wildlife have in common is: what goes in, must come out!

Scat can tell us so much about an animal, from genetic information, to diet and individual health - all of which in turn helps us paint a picture not only of their population but of the ecosystem to which the animal belongs. The top two photos belong to two different families of animals, canid and felid. Comparing the two, you can see that canid scat is a bit more twisty than felid scat, which comes out more round and segmented, like Lincoln Logs. Both have bits of hair, which attest to their more carnivorous diet. 

The bottom photo is likely coyote scat, and contains what is likely ungulate fur. Examination of the fur showed that it crimped when pinched between the nails, indicating a hollow hair follicle. Ungulates and polar bears are the only mammals with hollow fur, an adaptation which helps them stay insulated in the cold.

Until next time, we hope you can get out there and enjoy some of the bounty that winter has to offer before it's gone! 

Winter is in full-swing, January brought us deep snows and lots of photos from the Wolverine Tracking Project, and looking ahead, February is shaping up to be a busy month with March not far behind!

See below for news on our camera and tracking surveys. But first, check out some of the classes and events on the calendar.

A big thank you to our volunteers who have been braving the elements to maintain our camera sites! All the fresh snows on Mt Hood have given our camera crews a lot of opportunity for snowshoeing, digging cameras out of the snow, and bringing back some great photos! We've captured a few winter photos like this (below): 

However, thanks to our volunteers braving the elements, we have also detected a lot of wildlife. When the heavy snows weren't burying our cameras, which were originally installed about five and a half feet up a tree, they were making some cameras appear to be at ground level. The result? These wonderful close-ups:

Snow-level cameras also detected some other animals, which make up our marten's carnivorous diet: 

The fresh tracks of the deer mouse show it's hopping gait - though much smaller, it is very similar to the trail a snowshoe hare would leave: small front feet landing first and the larger, more powerful hind feet landing second just ahead of the front feet.

We also detected an up-close and candid portrait of another target species: the Sierra Nevada red fox!

Again, you can see the tracks of this montane fox in the snow. With a meandering trail like this and nose to the ground, it's not hard to assume this fox is hunting. Rodents often burrow into the snow, using the insulating layer as protection from predators and the cold. 

These many visits from these rare, native foxes help us understand their habitat use. We have also collected a few viable hair samples from some of these sites. Like scat samples, hair samples may help give us important genetic information to help us understand their population history, genetic diversity, and habitat connectivity. Hair samples are collected on wire brushes, which are attached to the black belt on the tree just under the bait. 

Our region is home to three kinds of montane fox, the Sierra Nevada red fox (Vulpes vulpes necator) in the Oregon Cascades and Sierras, the Cascade red fox (V.v. cascadensis) found in the Cascades north of the Columbia River, and the Rocky Mountain red fox (V.v. macroura) who are native to northeast Oregon. And, just this week, it was announced that there is a population of Rocky Mountain red fox living near Bend, and likely has been in this area for some time! Just like the Sierra Nevada red fox in our backyard, the montane fox can be elusive and difficult to study, even when they are right under our nose.

Other recent visitors include the ever-present coyote.

We've also detected a few bobcat: 

The bobcat on the right (or bottom), is difficult to make out. However, this lucky visitor is sporting a freshly caught hare! Bobcats (Lynx rufus) are well-adapted for snowy mountains, and, like foxes, marten, and coyotes, snowshoe hare are a favorite snack. Bobcats often hunt at night, and like the marten, don't let their small size fool you! They can cover 10 feet of ground in one pounce.  

We are more likely to see bobcats on the mountain in the winter than their felid cousin, mountain lion. Mountain lions (Puma concolor) are less adapted to snowy environments than bobcat and are more often detected at lower elevations than where most of our cameras are located. 

Another visitor we don't expect to see in the winter? Black bear. However, our cameras did pick up a bear between snows, a bit later than we would expect to see one.

Bears do not hibernate in the same way as most other animals, like some rodents and reptiles, who lower their body temperature along with their metabolism and sleep throughout the whole winter. Instead, they enter a state called torpor where their metabolism slows down, but their body temperature remains elevated and they are able to wake more easily. They can wake from this sleep-state during winter if the weather warms or they are disturbed, and they may even leave their dens, eating opportunistically if they come across food, but do not tend to venture out for long. Other animals that enter a similar torpor state are raccoons and skunks -  plenty of reasons why it is always good to be aware of your surroundings in the forest! Whether this particular bear is taking a mid-torpor stroll or has yet to enter this state for the winter is hard to say. 

One animal, we are not surprised (but always happy) to see is the black-tailed deer. 

Did you know Oregon is home to four native subspecies of deer? Mt Hood National Forest is home to the Columbian black-tailed deer (Odocoileus hemionus columbianus), a subspecies of mule deer. These deer are found from the coastal ranges to the Cascades, and their range runs from California to northern British Columbia (a sister subspecies, Sitka black-tailed deer, is found in Alaska). Rocky Mountain mule deer (O.h. hemionus), another mule deer subspecies, are also native to Oregon, and they are found on the east side of the Cascades summits, most commonly on the east side of our state - fittingly, their range also includes both the American and Canadian Rockies. Black-tailed deer are a little smaller and darker than mule deer, but both have large, mule-like ears. While mule deer seem to prefer open steppe, black-tailed deer tend to prefer brushy areas of coniferous and mixed-coniferous forests, sticking close to clear cuts and burns for browsing opportunities. 

Oregon is also home to two subspecies of white-tailed deer: the Columbian white-tailed deer (Odocoileus virginianus leucurus) and the Northwest (Idaho) white-tailed deer (O.v. ochrourus). The Columbian white-tailed deer is the most rare deer in Oregon. They only live along the lower Columbia River and Umpqua Basin, and the Columbia River population is a federally protected endangered species. The Northwest white-tailed deer is found in the northeastern corner of our state and has a healthy population. As a species, white-tailed deer grow increasingly more abundant as you move toward the east coast. They can be found from Canada to South America and prefer mixed-deciduous forest types.

In our area, you are most likely to see Columbian black-tailed deer - or if you are lucky, the rare Columbian white-tailed deer. Columbian white-tails have long tails they keep held closely to their bodies, and black-tails have shorter tails held loosely to their bodies. If you head a bit further east, you may see the Northwest white-tails; these are the smallest deer of all and have very wide tails. The antlers of each species are different, too. If the antlers are fully developed, white-tailed deer have one main beam on each antler, with points coming of the main beam; black-tailed deer (and mule deer) will typically have a fork coming off the main beam, with points coming off each branch. Check out ODFW's site to read more about our native deer or watch a video on Columbian black- and white-tailed deer identification.

Almost as copious as deer and as perennial as coyote, are our forest corvids.

Plentiful snows, hearty trackers, and some luck have resulted in some great tracking surveys!

One tracking team encountered three separate bobcat trails:

The track quality on these tracks is great, even with a dusting of snow falling after they were laid. These photos show nice clarity of both the individual tracks and the trail pattern, and you can easily see the characteristic felid shape in these tracks. Compared to canid tracks, the whole of the print is quite circular and the thick, oblong pad is surrounded by four evenly spaced "toe beans." When distinguishing between dog and cat tracks, it's better to pay attention to these characteristics, rather than the presence or lack of claws: while felid claws are retractable (and canids are not), a bobcat or mountain lion can extend its claws for traction - something you may see on, say, a snowy/muddy/icy mountainside. 

Distinguishing bobcat from mountain lion is easy, at least for the adults of the two species: go by size! Under 2.25" diameter is likely bobcat; greater than 2.75" is likely mountain lion.

The two tracks we are seeing the most of are snowshoe hare...

...​and squirrel:

The abundance of hare and squirrel is great news for the bobcat, whose tracks were found above, and the rest of our forest carnivores. The photos above show how similar these two animal's tracks are, both animals having bodies well-suited for bounding along, close to the ground. They can be difficult to discern from one another, but hare will be larger than a squirrel, and hare's tracks often have less definition due to the impressive amount of fur covering their pads and toes. Squirrel tracks are also more uniform and boxy - note how well the feet line up on the bottom set of squirrel photos, compared to the more staggered landing of the hare's front feet.

In our forest, we have two kinds of non-hibernating squirrels: the Northern flying squirrel and the Douglas squirrel. However, it is difficult to tell their tracks apart. One way to tell? If you can follow the trail to the start, there will be a "landing strip" where the flying squirrel hit the ground. If you have clear enough tracks, you may be able to tell that the 5th toe on the hind foot (the "pinky toe") is almost as long as any other toe - that's a flying squirrel, too. Read more squirrel track analysis by David Moskowitz. 

Whether in town or on the mountain, we hope to see you soon!