Summary of the 2019 Mountain Bluebird Field Season

Summary of the 2019 Mountain Bluebird Field Season

With the 2019 field season in the books (and Mountain Bluebirds from our nestboxes showing up as far south as Ft. Worth, Texas), November is a great time to cozy up by the fire and reflect on the robust, scientific data gathered during this year’s monitoring program!

This season was our third consecutive year banding Mountain Bluebird nestlings on the National Elk Refuge (NER) with identifiable colored-bands. It also marked our 16th straight year engaging volunteers to help monitor Mountain Bluebird Nestboxes on the NER nestbox trail!


We will likely remember the 2019 field season for its uncommonly cold spring and relatively low rates of bluebird nestling success compared to previous seasons.*

We can report success in banding another “cohort” of nestlings and having 4 banded birds from previous years resighted in Jackson Hole this year.

Takeaways included:

  • Volunteers and JHWF staff successfully monitored 112 nestboxes along the western edge of the NER this nesting season. 
  • The Mountain Bluebird nestbox-occupation rate was only 11% this season. The 89% of nestboxes that were unused by bluebirds were either left unoccupied our utilized by Tree Swallows or occasionally by House Wrens. 
  • JHWF professional bird banders placed identifying colored-bands on 43 nestling bluebirds. This number was down from 72 in 2018 and 85 in 2017; however, as the number of banded birds grows, we expect the number of “resighted” birds to increase reach summer. 
  • Ten (10) adult Mountain Bluebirds which hatched in NER nestboxes have been “resighted” since banding began in 2017. This includes 4 resights made in 2019. Deceased birds account for 2 of the 10 resightings; one banded bird was hit by a car near the National Museum of Wildlife Art while another struck a window near Tribal Trails. 
  • Several bluebird nests were predated (likely by weasels or raccoons) and/or were abandoned in 2019. We now installed safeguards on 25 nest boxes with a history of invasion, which we hope will deter predators in 2020 and beyond! 


Please click here to read the full report on the 2019 Mountain Bluebird Nestbox Monitoring Season. This report includes stories of individual birds, such as the female recently recorded in Texas.

To learn more about our Mountain Bluebird Nestbox Monitoring Project, follow this link.

*It’s possible the prolonged cold snap played a role in reducing the rate of successful nests we saw this year. Further explanation is provided in the report.

Watch for Wildlife Where the Fences End on S. Highway 89

Watch for Wildlife Where the Fences End on S. Highway 89

By Kyle Kissock | Communications Manager

Wildlife-Fencing Project Completed

The Wyoming Department of Transportation (WYDOT) recently completed the installation of “wildlife-fencing” along S. Highway 89 from South Park Loop Road to Munger Mountain Elementary School.

This general stretch of highway is a well-known hotspot for wildlife-vehicle collisions (WVCs), primarily due to the combination of high traffic volume and proximity to high-quality habitat for elk and mule deer, species which both utilize the nearby Snake River corridor.

New “wildlife-fencing” along S. Highway 89 funnels wildlife towards underpasses where they can cross under the road, like this one just north of the waste transfer station.

The goal of the new wildlife-fencing is to keep animals off the road and funnel any would-be highway crossers towards a series of wildlife underpasses.

Drivers can spot these underpasses in three locations: just north of the waste transfer station, under Flat Creek bridge, and under the Snake River bridge (on both sides of the river).

To assist any animal that might wander onto the road and find itself trapped between the parallel fence lines, “jump-outs” have also been constructed along the highway to enable wildlife to safely escape the roadway without the ability to re-enter.

Know the Danger Zones

While the Jackson Hole Wildlife Foundation is optimistic about the new fencing decreasing WVCs within the fenced zone, we’re still asking motorists to expect wildlife on the roadway while traveling on S. Highway 89.  In fact, the possibility exists for a potential increase in animal-crossing activity in certain areas, especially where the wildlife-fencing comes to an end.

Recently completed “wildlife-fencing” runs from South Park Loop Road to Munger Mountain Elementary School on S. Highway 89. While the new fences will help keep animals off the road, drivers should be aware of increased numbers of wildlife on the roadway at the ends of the fences (orange ovals).

This is because when an animal encounters the new fence near its northern or southern limit it will likely follow the new barrier until its first available crossing opportunity.

This opportunity will either be an underpass within the fenced zone, or the end of the wildlife-fence depending on the direction the animal choses to travel.

These new “danger zones” exist near the Munger Mountain Elementary School (southern fence terminus) and the intersection of Highway 89 and South Park Loop Road (northern fence terminus).

For the time being, travelers south of town will notice WYDOT has placed digital message boards at each of these locations to alert drivers of this exact issue.

View showing the full extent of an underpass designed to allow wildlife to safely navigate the movement-barrier formed by S. Highway 89.

Motorists should also be aware that the 3-mile stretch of Highway 89 from South Park Loop Road to High School Road (an existing WVC hotspot area) remains unfenced. It’s possible this stretch may also experience an increase in wildlife road-crossings as animals are inadvertently directed north by the new wildlife-fencing.

With the completion of this S. Highway 89 wildlife-fencing project and the possibility of significant wildlife-crossing funding through the SPET ballot, it’s exciting time for innovative wildlife-crossing solutions here in Teton County.

Let’s just remember to remain vigilant and give wildlife a break where underpasses and wildlife-fences aren’t, especially as we enter migration season in late fall and early winter!


Note: If you are a Nature Mapper, we encourage you to submit sightings of roadkill on S. Highway 89 to help us understand the effects the new wildlife-fencing

Let’s Save a Songbird

Let’s Save a Songbird

By Kyle Kissock, Communications Manager

2.9 billion birds.

Let that number sink in. That’s how many less birds inhabit North American skies, forests, and cityscapes today, than did in 1970.

You probably saw the (now viral) scientific study that was released last month. It exposed an avian population in free-fall in the United States and Canada over the last five decades. Experts are referring to the near 40% decline detailed in its conclusions as a “full-blown crisis.”

A study recently showed North American bird populations undergoing rapid declines. What can we do to help?

In the wake of the study’s release, I found myself feeling a little helpless. I suspect I wasn’t alone. I understand that from a scientific perspective, losing birds has broader implications for ecosystem health. But more personally, identifying the sparrows, nuthatches, and cardinals of my childhood backyard was one of my first authentic connections to the natural world. The arrival of colorful warblers in the springtime, the flocking of chickadees to the feeder during a winter snowstorm. The thought growing up without these backyard birds elicits a visceral reaction; to me, their simple presence still inspires awe and wonder. I believe birds make our world a richer place.

As a community of wildlife-enthusiasts, I think we have rights to be concerned. But a month out from the sobering news of this study, I’m also trying not to feel helpless. It’s true that reversing this trend and effectively combating decline of this magnitude will take intentional, global action. But what’s stopping us from personally working to save one, two, or three birds a year? For example, Nature Mappers report bird strikes on windows nearly every month . . . is there something we can be doing better that can make an immediate impact?

Let’s starting by taking the causes of avian decline case by case. Then, I urge us to consider if there are steps we can take today to lessen our impact on our avian friends. According to the United States Fish and Wildlife Service the top three causes of bird deaths in the United States are as follows:

  1. Cats: 2,400,000,000 bird deaths annually
  2. Collisions with buildings (glass): 599,000,000 annually
  3. Collisions with automobiles: 214,500,000 annually


What can we do? – Consider indoor cats. When young birds leave their nests, there is a period of days when they cannot sufficiently fly to escape predators. These fledglings stand virtually no chance against prowling prides of suburban felines. Many of us have pet cats ourselves. All of us know somebody who owns a cat, or cats. These numbers do not mean we should give up our beloved cats. They do mean that if we’re serious about being a good neighbors to local wildlife, we should be aware of the impacts “outside cats” have on nesting bird populations.


What can we do? – Drive a reasonable speed and pay attention to the road. Do not crash your car trying to avoid a bird. Do remember, the faster you drive, the less time any animal will have to react to avoid being smashed by your vehicle. Not carelessly exceeding the speed limit in known wildlife-habitat is a great way to keep yourself and animals safe!

Window Strikes (The single easiest way to help birds)

What can we do? – Birds collide with windows because they see reflections of sky, vegetation, or sometimes themselves. If you have windows that regularly experience bird strikes, please consider one of several mitigation techniques.

  1. Window decals – These can be purchased on Amazon here as well as from decal-specific sites here or here. Find a decal that works for the aesthetics and functionality of your window. Recommended spacing for decals is small enough that birds can’t fly between them, but anything is better than nothing. Personal note: I had “problem windows” in my apartment before adding a few clear, window decals. My evidence is unscientific, but my problem windows have experienced far less bird strikes over the last year. I wish I had acted sooner. 
  2. Write-on-glass markers – Check out this video to see how to mark your window with glass markers so that they are apparent to birds!
  3. Vertical blinds and or screens – A screen on the outside of a window can minimize reflective potential of the glass. Vertical hanging blinds on the inside of a window can serve the same purpose.

 Click here for more mitigation techniques.

So where does this leave us? Admittedly with a long way to go. But we also know that many people coming together, to make small changes really can result in outsized impacts. As acommunity that pledges to live compatibly with our wild neighbors and reduced human impacts on wildlife, I believe it’s our responsibility to consider everything from moose to Song Sparrows, in the course of our daily lives.

If you find yourself acting to minimize your impacts on birds on the heels of this report, please let me know at I’d love to share your story!

Note: In the past, Nature Mappers have coded mortalities from bird-window strikes as “Accidents” in the NMJH database. To be more specific going forward, the correct coding will be “Serious Injury” with a prompt to make comments in the “Notes” field to record a bird-window strike. 


Shrubs for Wildlife

Shrubs for Wildlife

Choke Cherries are favorites of birds, bears and small mammals. Birds can become “tipsy” feeding on the fermenting, fall berries.

As wildflowers fade and grasses dry, wildlife depend on the more permanent presence of woody plants to get through the next several months. Lowly shrubs are key for survival. They offer up colorful fruits and still-green leaves and stems providing essential fats and carbs for bird for migration and mammal hibernation for winter. And dried fruits and bare twigs contain sustenance throughout winter for critters above ground.

Here are a just a few examples of shrub and animal connections. Research on which animals species use which plants is relatively sparse for our region. Your Nature Mapping observations noting what animals are using which shrubs and how are helpful information.

Bears eat berries. In summer huckleberries are a favorite and right now they are into hawthorns—the main reason for the recent closure of the Moose-Wilson Road. Of course bears consume many other fruits as well.

In late summer, thimbleberries stand out amidst broad green leaves that thrive in the moist shade of streamside forests. Once red, the raspberry-like fruits disappear within a day or two—who ate them? Perhaps birds, squirrels, chipmunks, but no one knows for sure.

In late summer, tanagers, grosbeaks, vireos, robins, and waxwings search hillsides and backyards for service berries, chokecherries, and now ripening hawthorns.  In town they will look for planted crabapples (bears will too!). Red-stemmed dogwood fruits are particularly high in fats needed by migrating birds.

Serviceberries serve as late summer food sources for birds like Waxwings, Tanagers, and Robins.

While some bird species will keep flying south, the local abundance of American Robins and Cedar Waxwings will depend on the amount of fruit persisting over winter. Rosehips are particularly durable. Leftover fruits come spring give an added boost to returning migrants.

Bright orange elderberry and mountain ash are particularly popular with birds, small mammals, bears, elk, and moose. Some people have said these berries are poisonous because they see so  many untouched and often on the ground. Elderberries have a high alkaloid content—we people must always cook the berries first. However, they are preferred foods of many critters. Most likely, the plentitude of berries keeps them from all being consumed right away. Also, these fruits become more tasty with a frost or two which brings out the sugars. It is possible for birds to become tipsy on fermenting fruits.

Studies indicate that antioxidant compounds in polyphenol and anthocyanin rich fruits help reduce the extreme metabolic stress of migrating birds.  Anthocyanins show up as a deep purple maroon color.

Hawthorne berries are a favorite of bears. They grow in abundance along Moose-Wilson Road.

After the rut in late fall, moose congregate, often by the dozen, on Antelope Flats. They are eating the nutritious green leaves and twigs of antelope bitterbrush, not the pungent silver twigs of sagebrush.

Moose also depend on the cover and browse of willows stands.  And as those with gardens know, moose will zero in on red-stemmed dogwoods and roses in the landscape.

Sagebrush grows in abundance in Grand Teton National Park. Wintering moose, however, are largely grazing on the intermixed antelope bitterbrush.

Leaves and twigs, as well as the dense twiggy habit of sagebrush provide food and cover for greater sage-grouse winter long.

Bighorn sheep, along with deer and elk, will preferentially browse a low fuzzy shrub called winterfat on dry knolls.  Winterfat contains 10% crude protein in winter.

Townsend’s Solitaire, related to robins, particularly savor the evergreen cover and bluish “berries” of juniper. So look for them on dry hill sides with an abundance of Rocky Mountain juniper, such as the flanks of Miller Butte.

Juniper Berries are a food source for the Townsend’s Solitaire, a relative of the American Robin

All our wildlife depends on plants. Take a closer look at these connections, and please keep on Nature Mapping!

By Frances Clark

Frances will be presenting a program on “Teton Shrubs: ID Tips and Wildlife Values” Tuesday, Sept. 24, at 6 p.m. on at the Teton County Library.

Working for Wildlife with Hoback Ranches

Working for Wildlife with Hoback Ranches

By Kyle Kissock, Communications Manager

Thirty JHWF volunteers partnered with local property owners and families to help removed burned fence at Hoback Ranches. The community is installing over 10 miles of wildlife-friendlier fence in this critical migration corridor.

Not all wildlife-friendlier fence projects are created equal.

Rarely, for example, are Jackson Hole Wildlife Foundation fence volunteers treated to homemade pastries, a full wash station, and unobstructed mountain views all in one project. And never before have we had the privilege of assisting a local community rebuild its wildlife-friendly infrastructure after a destructive wildfire.

But let’s start at the beginning.

Formed in 1976, the Hoback Ranches subdivision was one of the first of its kind in Wyoming. It’s a community with a history of resiliency; until recently, Rim Road, the artery which connects the Ranches to Highway 89, was unplowed in winter. Year-round residents had to snowmobile or ski the entire distance up the Rim Road from the Highway to reach their homes. Apparently, there was a surprising contingent of these hearty locals who did.

Wildlife conservation has also been a core values of Hoback Ranches since its founding. The Ranches are located in the Hoback to Red Desert migration corridor for mule deer, as well as a prominent pronghorn migration pathway. An elk feed grounds to the south means migrating elk are community regulars. According to long-time resident Bill Conley, the area also provides habitat for abundant badgers, “chiselers,” coyotes, jack rabbits, snow shoe hare, and even more seldom-seen critters like Great Gray Owls, black bears, and the occasional mountain lion or wolf. An abundance of water and willows, large lot sizes, and hunting restrictions all add to the area’s high habitat value.

The remains of a moose that became entangled in a Wyoming fence during the winter of 2018/2019. Wildlife-friendly modifications to fence lines can prevent human-cause mortalities like this one.

To make life easier on wildlife, Hoback Ranches recently collaborated with Wyoming Game and Fish on a grant to fund replacement of the 19 miles of barbed-wire fence that ran the length of the subdivision’s perimeter, with wildlife-friendlier fencing. Wildlife-friendlier fencing generally contains a smooth-wire component, and/or abides by dimensions which allow wildlife to travel over or under wires with minimal risk of entanglement. The grant was accepted and funded by the Jonah Interagency Mitigation and Reclamation Office and the Pinedale Anticline Project Office.

However, replacement of the existing barbed-wire had scarcely begun before last October’s human-caused Roosevelt fire swept through the subdivision. The fire obliterated homes and consumed the natural landscape, along with the beginnings of the recently-funded wildlife friendlier fence modifications.

The hilly topographic character of the landscape here made removing wire somewhat challenging but added to the stunning scenery of project site.

For those who haven’t traveled to the Roosevelt Fire burn zone, the full extent of the fire’s impact on the landscape is jaw-dropping. By the time the massive 61,000-acre blaze ran its course, it destroyed 50 houses in Hoback Ranches, nearly half of which belonged to permanent residents. Much the conifer and aspen growth that covered the Ranches’ hills now stands charred, and many of the houses that survived the blaze sit exposed in the vast expanse of blackened timber and sage.

But what also stands out is the regrowth. Less than a year from the fire, green grasses, patches of fireweed, and fields of knee-high purple lupine coat the burnt understory in midsummer. The human regrowth Hoback Ranches is experiencing is also apparent. The drone of power tools, raising new homes and clearing wasted timber and roadways, echo across the Ranches hillsides. Regrowth emergent, resiliency in action.

In July, volunteers from the Jackson Hole Wildlife Foundation were asked to help remove the old perimeter fence that had been destroyed by the fire. Because most of the subdivision is bordered by actively grazed land, fencing here is still necessary, and miles of fence downed by the fire need to be removed before the wildlife-friendlier fencing can installed. Furthermore, even in its dilapidated state, downed wire presents an entanglement hazard for passing wildlife.

This wash station came in quite handy for cleaning soot off our bodies and clothes. Staying clean was quite impossible.

The first step of the process was separating burned wire from charred fence posts. Volunteers developed a system of removing staples from the posts to free the wire, then spanning into human “disassembly lines” to walk the loose wires towards our wire-winder. Wire ends were tied to the winder, which provides a mechanical advantage in coiling large lengths of fencing into manageable spools. These smaller spools could then easily be removed from the site in the beds of pickup trucks. In areas of steep terrain, where burned trees and brush were too dense to operate the wire-winder, volunteers were forced to roll fencing by hand. It was a dirty, sooty job, but it was rewarding. Generous Hoback Ranches residents provided us with cookies, brownies, and a  wash station (the same type that wildland firefighters use) we found to be icing on the cake.

Barbed-wire rolls generated by the winder. By the time we had finished, JHWF volunteers had partnered with residents to remove three miles of wire in two field-days of work.

After two full days of work, JHWF volunteers had partnered with landowners to remove three miles of dilapidated wire. 30 JHWF fence team volunteers had contributed an impressive 298 total volunteer hours to the effort. With a little more labor, Conley and fellow homeowners hope to complete the project by next spring.

Staff and volunteers of the Jackson Hole Wildlife Foundation were honored to be made a part of this community’s rebuild, even in our own small way. We were also grateful to get to experience the scenic beauty of the area which still very much remains intact after the fire.

A sincere thank you to all who were a part of this truly special experience!

It’s hard to beat open fields of blooming lupine under Wyoming skies!

If you’d like to get involved with volunteering on our fence team in the future and are not already on our mailing list, email to sign up!

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