Jackson Hole Wildlife Foundation is excited to announce a new partnership with beaver researcher and hydrologist Jeff Burrell and a new project for interested Nature Mappers – Beaver Project! In Beaver Project, Nature Mappers will provide information about beaver sign they detect on the landscape in the Jackson Hole area. Read on for more information about Beaver Project from Jeff:
It is well documented that beavers provide a wide range of ecosystem services including benefits for water quality, water quantity, and fish and wildlife habitat. Beavers also make ecosystems more resilient to the impacts of climate change. These benefits include reducing peak stream flows, and so limiting erosion and damaging flashfloods; improving drought resilience and increasing ecologically beneficial natural water storage; stabilizing water temperatures; and creating/maintaining fire breaks and refugia from fires.
“More than ever, we need beavers doing what they do so well, but they need our help. Information provided by citizen scientists will help wildlife managers understand where beavers are on the landscape and what services they are providing. In Beaver Project we will gather this information by a simple process of field surveys and observations. Beavers leave behind a record of where they are or were active, and what they are or were doing. So not only can we learn about where they are now but where they were active in past. This will help us understand trends in beaver activities so federal and state agencies as well as private landowners can take actions to help ensure beaver conservation and restoration.”
Beaver Project Protocol:
Email hilary@jhwildlife.org to be added to Beaver Project in your Nature Mapping account. Not a trained Nature Mapper? Email hilary@jhwildlife.org to sign up for the August 24th training.
While out hiking along creeks, check waterways for beaver sign. If you see sign on the landscape, please consider Nature Mapping it.
If you see a live beaver, please use Casual Observations, rather than Beaver Project to document the sighting. Beaver Project is for sign only. If you observed a live beaver and beaver sign, you can indicate the live beaver in the notes section of the Beaver Project form.
Beaver activity indicators are conveniently grouped into the following categories. Because many beaver activity indicator persist through time, we can also group activities into current activities (within the past few months, recent activities (within the past year or two, or past activities (more than two years old).
Please view Jeff’s Beaver Sign Identification Seminar on our YouTube channel for more information.
In Nature Mapping Jackson Hole’s Beaver Project, check the boxes of all activity indicators you observe on the landscape, and their ages.
1. Clipping and girdling:
Beavers are famous for chewing wood to gather food and building materials. As they do so, beavers leave distinctive patterns of tooth marks. ‘Clipping’ means that the beaver directly chewed through the wood; ‘girdling’ means that the beaver partially chewed through the wood and then let wind and gravity do the rest.
Current: the wood has a fresh appearance (fresh wood color with sharp tooth marks)
Recent: the wood has changed to a darker color but still retains sharp markings
Past: the wood is much darker and more weathered in appearance with cracks and feathered markings
2. Food rafts, caches and feeding stations:
Beaver gather and store branches to eat (now or later). These branches will have the characteristic tooth marks of clipping and girdling, and can be grouped into age categories in the same fashion as clipping and girdling.
3. Slides:
Beavers move branches from harvest location to ponds and streams. To do so they pull the material into the water; these activities leave behind a smooth ramp in the mud adjacent to the pond or stream. These ramps are ‘beaver slides.’
Current: the slide is very smooth in appearance with few if any other animal tracks
Recent: the slide is still somewhat smooth but will likely show other animal tracks
Past: hard to distinguish between a beaver slide and animal path, but the location will help identity as a beaver slide
4. Bank dens, bank lodges and free-standing lodges
A bank den is a simple home burrowed into the stream or river bank. A bank lodge is similar to a bank den but has been reinforced by beavers building a dome of branches and mud above the burrow. A free-standing lodge is a pile of branches reinforced with mud within the pond.
Bank den: current (fresh, maintained appearance with current clipping around the entrance, recent (similar but the entrance will show some degradation and only recent clippings, past (very degraded and likely at least partially collapsed.
Bank lodge: see above but now we can use appearance of reinforcing branches and mud to categorize as current, recent and past
Free-standing lodge: current (current clipping and fresh mud piled on top of branches, recent (recent clipping and mud at least partially washed away, past (past clipping and most if not all mud washed away
5. Scent mounds:
Beaver use piles of debris (leaves and twigs) and castoreum (a glandular scent) to mark territories.
Current: fresh leave and twig appearance and scent
Recent: appearance more weathered and little if any scent
Past: likely not identifiable as a scent mound
6. Tracks and scat:
These are the most ephemeral of the indicators we will use. Mainly note if observed
Current: fresh appearance
Recent: degraded appearance
Past: unlikely to be identified
7. Canals:
Beavers excavate canals from the channel or pond to provide safe access to food resources.
Current: sharp boundaries with little vegetation overgrowth
Recent: boundaries less distinct with some vegetation over growth and partial collapse
Past: substantial over growth and collapse
8. Dams:
Since dams are for the most part constructed from branches and mud, use appearance of these
Current: fresh cut branches and mud
Recent: recent branch appearance and mud partially washed away
Past: past branch appearance and mud mostly gone
Thank you for your contributions to this important data set. We look forward to understanding more about beaver distribution in Jackson Hole from our partnership with Jeff!
This year, Vicki Morgan and Kevin Perozeni will head up our MAPS bird-banding stations at Boyle’s Hill and the Kelly Campus of the Teton Science Schools. Vicki will be returning for her third summer in a row, while Kevin will be joining us for the first time!
Vicki Morgan – After graduating from the University of North Carolina at Asheville with a B.S. in Ecology and Evolutionary Biology, Vicki Morgan has been working as a roaming biologist and bird bander across the United States. Her past wildlife-related jobs were in areas such as South Carolina, Illinois, American Samoa, Washington DC, NYC, Maryland, and Montana, where she studied and banded birds ranging from hummingbirds to hawks. Vicki has been an avid birder from a young age, and she also enjoys expressing her love of nature through art (fun fact: Vicki actually Minored in ceramics). Vicki spent the winter in Colorado and is returning for her fourth season as Lead Bird Bander with JHWF.
Vicki Morgan figures out the age of a Tree Swallow captured in a mist net last summer.
Kevin Perozeni – Kevin’s educational background includes graduating with honors research with a Bachelor of Science from The Ohio State University, majoring in Forestry, Fisheries and Wildlife. His research thesis involved studying the survival of wintering birds in an increasingly changing urban environment. Since graduating last year, Kevin traveled across the country to work in a variety of field positions. He conducted bird banding at Powdermill Nature Reserve, Pennsylvania as well as banding in Cape May, New Jersey. This fall Kevin will enter a graduate program at LSU, where he will be researching lasting hurricane impacts on avian and forest communities. Kevin also has experience working as a Naturalist within the Cleveland Metroparks, supporting public outreach and education. In his free time, he can be found birding or storm watching, always scanning the skies for all the new experiences that nature consistently brings! Kevin is excited to hold the position of Assistant Bird Bander with JHWF this summer.
An Ohio native, we couldn’t be more excited to welcome Kevin and his wealth of experience to the JHWF team in 2023!
What a great time to be out traveling between Victor Idaho and Farson Wyoming! On Friday, a beautiful sunny spring day, wildlife was on the move and easily seen from the road. My wildlife sightings list in one short day included large groups of elk, mule deer and pronghorn, bighorn sheep, sandhill cranes, vultures, prairie dogs, burrowing owls, bluebirds, and light-colored slatey male Northern Harriers. Enough to give me a grin for days! And lots to report to our Nature Mapping database. 😊
This drive also elevated my vivid awareness of how dangerous this time of year can be for animals moving toward summer range and it reminded me of the work and collaboration we are doing to protect this precious resource. Some updates that may interest you:
In December 2020, at the behest of the Wildlife Foundation and others, the Board of County Commissioners added a statement to the County Transportation Plan that requires a county planning process for WY 390 as a whole corridor. This highway is challenging to mitigate in part due to the dense development and number of access roads. By planning for mitigation at a ‘corridor’ level, the county can move past piece-meal mitigation efforts that have been employed in the past (which have been helpful, in bits and pieces) and create an inclusive plan that makes sense for motorists and wildlife for the length of the roadway. We celebrate this milestone and we look forward to working with the county to create the safest plan for all who live and drive along WY 390 that also preserves and improves habitat for native wildlife that need the “West Bank” to survive.
On the topic of WY 390, our 4 fixed radar signs will be replaced this summer, and an additional radar sign will be added for southbound traffic where the speed limit decreases from 55 to 45 mph. WYDOT has also been scheming additional signs for either end of the corridor that are larger with multiple species represented. These will be similar to other wildlife signs in the county on US 191 and 89.
Planning and design for wildlife crossings at the WY 22-390 intersection is moving along. Construction is slated to begin late 2022 – early 2023. In a similar time-window, the Stilson parking lot is undergoing planning for expansion by JHMR and Teton County. This important work aims to preserve the greater ecosystem by expanding public transit. We are engaging with the county and partners to ensure that wildlife movement in this critical location is not compromised along the way.
A recent federal project was approved to plan for improvements of WY 22 on Teton Pass. This, along with the Stilson plan and another federal project—the BUILD grant— aim to seamlessly tie traffic, transit, and pedestrian flow together from The Village to Driggs, Idaho. We remain vigilant to the process to safeguard wildlife needs for habitat and movement.
Good research continues to help us adaptively improve wildlife crossing structures. Colorado DOT just released results from a study of ~5 years of monitoring over 10 miles of highway mitigation. You may find some of the results interesting…
• Wildlife-vehicle collisions were reduced by 92% where mitigation was installed
• Round-bar wildlife guards (similar to cattle guards) were the best at deterring wildlife breaches
• Elk—a notoriously challenging animal to mitigate for—took 4 years to begin using the structures
Data from our very own South US 89 mitigation is now being processed by the University of Montana. Researchers there are processing wildlife-vehicle collision data, carcass information, and trail camera data collected by a broad partnership, including JHWF, WYDOT, Game and Fish, Teton Conservation District, Greater Yellowstone Coalition (GYC) and others. We hope to see preliminary results that delve into crossing structure use with and without funnel fence as well as any long-term concerns about wildlife deviating from the mitigation and crossing the highway surface at fence ends. These results will help direct any adaptive management needed to make the crossings as effective as possible.
We were just awarded seed money from the Community Foundation’s Youth Philanthropy Program (thank you Youth Philanthropists!) to launch a social media marketing campaign that will provide messaging around safe driving for wildlife in Teton County. The advertisements will include messages like local statistics and safe driving tips for locals, commuters, and visitors.
Finally, stay tuned for a JHWF-GYC-JHCA hosted speaker series that will dive into some of the wildlife-road mitigation that is in planning stages and/or has been proposed for various problem roads around the county. In our first meeting, we plan to talk more about ElectroCrete, which may be tested at fence openings along pathways adjacent to wildlife mitigation.
Thank you for your support and, as always, if you’d like to learn more please reach out to us!
Thank you for your extraordinary participation in Moose Day 2021. At this time, we have preliminary totals of 106 moose and 109 volunteers who spent 300 hours scouting! The majority of you drove (163 hrs), others skied (74 hrs), a few snowmobiled (33.5 hrs), many walked (25 hrs), and one group snowshoed (4 hrs).This is impressive! Unfortunately, as often happens on Moose Day, only half the teams saw moose (18 out of 34). This is not a reflection on your effort—you tried hard! Moose appeared most frequently along the Gros Ventre River as far east as the Darwin Ranch (14), to along the stretch around Kelly to the rotary (19). Others were seen in much less wild terrain, such as around golf courses at Teton Golf and Tennis and Teton Pines (around 20). Some were resting and feeding in neighborhoods around Wilson, Tribal Trails, and Crescent H subdivisions. Areas of deep snow in the park, downtown Jackson, the forested slopes along Fish and Fall Creek Roads had none this year. Even the Buffalo Valley, a former hotspot, had only 4 moose.
Photo: Josh Metten, Ecotour Adventures
Searching for moose had its challenges. Several reported steep and high snowbanks along roads. “Berms were high so though we tried to cover the area, one never knows as it only takes a small something to hide the animals when they are lying down.” Grace Barca and her granddaughter Elly spent the morning combing the area along Fall Creek Road and up into Indian Paintbrush. “The residents said the snow was too deep on the hill.” So they looked on the flats … “We crossed three streams: Fish and Fall Creeks and the Snake and expected something in the lowlands.” Still no moose. Moose were few around Trail Creek likely because of the cross-country ski races. Notably, for only the second year, we had a team in Alta who spotted 2 moose after much driving and walking.
Photo: Jenny McCarthy
Jason Wilmot, biologist with the US Forest Service, led the most adventurous team on two snowmobiles east out the Gros Ventre to the Darwin Ranch. He texted: “We saw 14 moose up the Gros …. Only one dead snowmobile! Bummer. All safe though!…Beautiful up there!”…“On the hunt for a new snowmobile.” His teammate Lesley Williams, who waited two hours while the one snowmobile finished the search, was delighted to have the time alone in the solitude of wilderness. We appreciate the USFS folks for taking their days off to go search for moose.
While many people did not see moose, they did see other wildlife. The team in the north end of the park around the Jackson Lake Dam had a special treat: Kent Clements and his wife saw otter tracks around Willow Flats, and Eric Carr actually saw an otter “catch the biggest sucker fish I’ve ever seen. Huge!” Matt Fagan reported, “No moose, no traces, but we did get to watch a family of four otters moving through Willow Flats up and over dam wall…body sledding, each taking their own line down the back side. Very fun to watch. Their movements were like inchworms: doubling up in the middle then slide stretching out. Inchworm or slinky like.”
Photo: Beverly Boyton
In their territory around Ditch Creek, Beverly Boynton and Ray White reported Horned Larks, mule deer, Greater Sage-Grouse, and a Great Grey Owl. Kathy McCurdy and Nancy Shea skied the stretch from Kelly to the Gros Ventre Campground and were surprised by an elk in the willows. Marjie Pettus and Brian Bilyeu scouted East Jackson and “did not see a single moose. That said, our trip was not uneventful: we saw elk (of course), bighorn sheep, 2 bald eagles, 3 deer, and no surprise, but fun 2 trumpeter swans” on the National Elk Refuge. Sue and John Ewan were down by the Snake River Sporting Club and spied a large flock of American Robins, along with Townsend’s Solitaires, and a Mourning Dove. Kathy and Jay Buchner also spotted robins north of the junction of Boyles Hill and Ely Springs Roads.
While there were no moose in their territory of the Snake River Ranch, team members observed many tracks and critters. Ben Wise saw “lots of fox tracks, maybe some ermine tracks, and a magnificent pair of bald eagles”. Jennifer Dorsey and KO Strohbehn noted tracks of martin, coyote, fox and deer, and heard Red-winged Blackbirds. Josh Metten, was able to discern “many fox tracks and holes they dug for the ‘catch.’ Vole?” Gretchen Plender reported. “Two Canada Geese flew into land in the ponds on the Shooting Star grounds! Julie (her ski partner) exclaimed, ‘Oh spring is coming!!’”
In addition, Renée Seidler, executive director of JHWF, in the area south of South Park found “two coyotes and a boat-load of swans south of the Snake River.” Mary Ellen and Bill Fausone surveyed Saddle Butte area and reported a fox, 9 deer, and “when we got home a gorgeous Great Horned Owl nesting in a tree. So is was a great day to see wildlife.”
We want to add thanks to the contributions of agencies, wildlife tour companies, and landowners. Sarah Dewey and Carson Butler of Grand Teton National Park found the 4 moose up at Buffalo Valley (fewer than in past years). Sarah also facilitated the park permit. Ben Wise of WGFD organized the team on the Snake River Ranch. Morgan Graham of Teton Conservation District surveyed Game Creek. Note, Morgan used his GIS skills to produce the Moose Day maps when Moose Day first started. Aly Courtemanch is the lead for Moose Day at WGFD. Without her, we would not have Moose Day!
Photo: Josh Metten, Ecotour Adventures
We thank the owners and property managers for permission to scout Snake River Ranch, Spring Creek Ranch, Jackson Hole Winery, Jackson Hole Golf and Tennis, Teton Pines, Astoria Park Conservancy, Snake River Sporting Club, Teton Mountain Schools, and the many other private landowners. We appreciate the volunteer time of tour companies: AJ DeRosa of JH Vintage Adventures, Josh Metten of EcoTour Adventures, and Matt Fagan of Buffalo Roam Tours.
And a final note: We had participation from hearty volunteers of the Barker, Dornan, Craighead, Ewing, and Linn families—who have contributed to the understanding and appreciation of our wildlife heritage over decades. Without their commitment to the valley, we would not have so many moose and other wildlife to enjoy on Moose Day.
This is preliminary data. We will have a final report in our next Nature Mapping enews with a map of where all the moose were and comparisons to years before. However, we wanted you to be the first to know the success of Moose Day 2021.
by Frances Clark, Lead Ambassador Nature Mapping Jackson Hole
At this time of year, people see their lawn and gardens riddled with ground squirrels or pocket gophers or their trees chewed to toppling by beaver and ask, “What is the purpose of these pests?”
Small mammals serve as prey for our large mammals and raptors and provide other ecological services, such as aeration and recycling of soil and nutrients. Beaver, our largest rodents, form habitat for many other creatures, although they are a nuisance to homeowners with ponds and aspen plantings.
Small mammals serve as prey for raptors and other animals. Photo: Steve Jurvetson
Uinta ground squirrels are common in sage and grassland habitats, and they find similar features in lawns. They dig tunnels and form sleeping chambers, thereby creating holes and mounds, much to the consternation of homeowners and ranchers. I have nature mapped dozens and dozens of ground squirrels driving out the National Elk Refuge road in spring. Indeed they emerge and mate in April and each pair can produce four to seven young by May, which then scamper about every which-way eating grasses and flowers. Their abundance can seem overwhelming, even repulsive.
Driving out this same route a day in mid-June, I spied several red-tailed hawks, Swainson’s hawks and even golden eagles soaring overhead and a coyote or two trotting through the fields, ears alert. The high-pitched alarm calls of ground squirrels came from all directions. I realized the abundance of raptors was due to the plentitude of squirrels. Uinta ground squirrels are tasty packets of protein. They are a necessary and timely food source for raising young raptor chicks, red fox kits and coyote pups. And the time is short… Uinta ground squirrels are above ground only three months before they go dormant in August for the next nine months. Many don’t make it.
Other raptors, including northern harriers, prairie falcons and American kestrels, hunt open areas for rodents in sizes appropriate to their body weight. In addition to Uinta ground squirrels, least chipmunks, meadow voles and deer mice are important components of their diets. In old growth forests, red-backed voles nourish northern goshawks and pine martens. Great horned owls also devour small mammals. Fortunately, most small rodents don’t bother us humans.
Another annoyance in cultivated areas is northern pocket gopher. As snow melts, one can see the extensive “eskers” that mark the pocket gophers’ progress underground eating roots, rhizomes and tubers for food. In summer, occasional fresh mounds of soil indicate areas of activity. Rarely does one see a whiskered grey face, with tiny eyes and ears, emerge from a hole. Bear, fox and coyote use their ears to find this plump fossorial (digging) prey. The Teton Raptor Center is monitoring pocket gophers as part of their population studies of the majestic great gray owl. Great gray owls can hear pocket gophers moving under feet of snow and plunge feet first to catch their vital winter meal.
In addition, pocket gophers are particularly important in enhancing soils in mountain meadows. Their prodigious earth movement churns up nutrients, allows water and air to seep into hard-packed soils and provides opportunities for seed germination.
Young beaver move up creeks and irrigation ditches to find new territory to raise a family. The sound of running water and presence of willows and aspen stimulates dam building. Some of these appealing sites are now landscaped into ponds surrounded by aspen trees. Beaver build dams to impound water to serve as moats and insulation for their lodges, where they raise their young and keep safe. Anyone who has visited Schwabacher’s Landing or Moose-Wilson Road in the park has witnessed the diversity sustained by these industrious rodents. Beaver impoundments encourage willows, sedges and aquatics, which in turn provide food and shelter for ducks, sora, amphibians and moose. The U.S. Forest Service and other groups are moving trapped beavers up drainages to enhance wildlife habitat and also to help with flood control and water quality. While beaver can be pesky in our expanding human habitats, they are much needed in our natural habitats.
Even the most lowly, annoying-to-us critter has a role to play in our ecosystem. While no one wants wildlife in our homes, understanding the importance of each species in Jackson Hole can enhance our enjoyment of the out-of-doors, even in our own backyard.
How to Nature Map Small Mammals:
Nature mappers can help record the use of habitats — both cultivated and wild — by many of our often unseen or unappreciated small mammals. Here are some tips for mapping a few rodents and related species:
Uinta ground squirrels are buffy brown, about a foot long, with short tails. They often sit erect near the entrance to their burrow holes or look like soft lumps of manure on the edge of roads, until they move. We particularly encourage notations on the First of Year (FOY) appearances in March and April and Last of Year (LOY) sightings in late July and early August.
Uinta Ground Squirrel
Our other ground squirrel, Golden-mantled ground squirrel, looks like a chipmunk due to two set of stripes on its back, but unlike chipmunks, it does not have stripes on its head or tail. These are mostly found in forests, rocky areas and some shrubby sites, particularly at higher elevations.
Golden-Mantled Ground Squirrel
We have three species of chipmunks: all have stripes on their heads, backs, and to some extent down their tails. Least chipmunk is more likely in the sage flats and runs with its tail straight up. The tail is longer than its body. It is smaller and darker on its belly than the Uinta chipmunk, which is found more in coniferous forests or shrubby areas. Uinta chipmunk tends to have a lighter belly and a wider tail. Unlike the other two species found in Jackson Hole, Uinta chipmunks have a white outermost stripe along their backs (rather than a fairly distinct black or blackish-brown stripe), which is shown nicely in this Berkeley photo. Relatively more brightly colored, yellow pine chipmunk is also a forest species and has orange highlights. These can be very difficult to distinguish. Do your best, but when in doubt leave it out.
Three Chipmunks in Jackson Hole: Least (left), Uinta (middle) and Yellow Pine (right). Middle and right photos Wyoming Game & Fish Department (WGFD).
Northern pocket gophers by their nature are hard to see unless you are lucky. These gray, 8 inch animals have small eyes, tiny ears, and large front feet with noticeable claws. Their tunnels are obvious either as 3-4 inch rounded eskers left over from winter foraging or fresh mounds of soil about a foot wide and several inches high in summer. This “sign” can be used to indicate areas of abundance in sage flats, meadows or forest openings.
Pocket Gopher, Yellowstone National Park; Gillian Bowser; 1990
Mice, voles, and shrews are impossible to identify to species; therefore, we encourage nature mappers do their best record the groups. Mice have big ears and long tails. Voles have smaller ears and shorter tails and look relatively compact compared to mice. Shrews, which are a separate family, have elongate pointed heads with small eyes and ears and many teeth to eat their prey of insects, earthworms and the like. Tails vary in length. Our common species is masked shrew. We do not have moles in Jackson Hole.
Mouse (left), Vole (middle), and Shrew (right).
Beaver can be distinguished from their relative muskrat by their flat vs. rat-like tails seen while swimming in water. While both have rich brown pelts, beaver are usually bigger with a flatter head and are found among willows or other woody plants, which they use for food and dam building. Muskrats use soft-stemmed cattails, reeds and rushes to form their mounds and for food; therefore, they are more likely in wet meadows and marshes.
Beaver (left) has a flat tail while its relative, the Muskrat (right), has a rat-like tail.
Red Squirrels: Many people recognize the wide-eyed, bushy-tailed red squirrel found in forests and porches. Often we hear their chatter in the deeper forest. These tree squirrels are defending their territories and particularly their caches of cones. If you happen to see an active “midden,” pile of cone scales and stalks, take a point. This is an indicator of highly productive trees and possible pine marten habitat.
