Thriving elk herds are adding to the challenges facing mule deer populations, which have been on the decline for decades in Wyoming and across the west, according to emerging research.

Kevin Monteith, professor of natural resource science at the University of Wyoming, said when mule deer live closer to elk it comes at a cost to their fat gain over summer. It is important because the amount of fat female deer enter winter with plays a big role in their ability to survive and produce fawns in springtime.

"So what that means is when there is a fat deficit associated with exposure to elk, then that subsequently is going to have ramifications associated with over winter survival for those deer," Monteith explained. "Because they are not gaining the fat that they would otherwise during the summer."

Mule deer tend to eat in isolation, and when they are forced to compete for forage areas, they are easily bumped away by much larger elk who dine in groups. The number of mule deer in Wyoming has dropped from 578,000 in 1991 to just 300,000 today. Last year, the Wyoming Game and Fish Department launched a five-year mule deer monitoring project to determine the underlying causes of deer loss.

Monteith's research has not yet been formally published, but Game and Fish officials are already working to identify areas to shrink elk herds to give deer some relief. The agency has also proposed removing predators including mountain lions and bears. Monteith pointed out the relationship between predators and deer is highly nuanced, and predators do not always play a dominant role in regulating deer populations.

"That always sounds like an easy fix, and in fact in a lot of systems that is not the fix," Monteith noted. "We can put a lot of resources into doing something like that to yield little to no benefit."

Decades of human activity have disrupted vast tracts of mule deer's historic habitat, including fossil fuel extraction, subdivisions, and vehicle collisions along migration corridors. Monteith admitted elk are not the only challenge facing the iconic species.

"And of course we know there are a lot of other things that have contributed to mule deer decline: changing weather, climate patterns, habitat fragmentation and loss," Monteith outlined.


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Conservation groups are celebrating a long-fought battle to protect the dwindling population of wolverine in the Northwest and northern Rockies.

The U.S. Fish and Wildlife Service has announced wolverine warrant being listed as threatened under the Endangered Species Act. There are about 300 left across the Northwest and northern Rockies.

Bethany Cotton - conservation director at Cascadia Wildlands - said the effort to protect wolverine began more than two decades ago.

"It's literally been 20 years of advocacy," said Cotton, "to ensure that these climate-sensitive species receive the protections they need and can get on the road to recovery."

Fish and Wildlife has seesawed on the question of protecting wolverine. Last year, arguing against listing, the state of Idaho said conservation efforts had restored the species to a stable population.

The listing was published today and opens up a 60 day public comment period on the interim rule.

Cotton said listing the species as threatened is a great first step but adds that trapping is a major threat to wolverine that could be allowed to continue under this rule.

"It also has language that allows some activities," said Cotton, "and unfortunately, one of the things in that interim rule is allowing for take or harming or killing wolverine in trapping."

Cotton said the science has been clear that wolverine need safeguards.

"Now, we need to make sure that those protections are meaningful," said Cotton, "that they're followed by state and federal entities, that we get a recovery plan and critical habitat, and that we really do protect these really amazing animals."




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It might not make hearts skip a beat like the sight of a Monarch butterfly or gray wolf, but biologists say a rare flowering New Mexico plant nonetheless deserves endangered species protection.

Inclusion of the swale paintbrush is under consideration by the U.S. Fish and Wildlife Service.

Michael Robinson, senior conservation advocate at the Center for Biological Diversity, said the plant historically grew at several Southwestern sites but climate change and excessive grazing have taken their toll.

"We're talking about an extraordinarily arid area in the Bootheel of New Mexico -- it's Chihuahuan Desert -- it's got its own stark beauty," Robinson observed. "But when you see a relatively tall, graceful plant it provides a whole new perspective on the landscape."

He noted the swale paintbrush is one of the rarest plant species in North America. After accepting public comments over the summer about adding the plant to the endangered list, it is now under consideration for inclusion. Should it move forward, the Fish and Wildlife Service will have to develop a recovery plan.

Robinson pointed out the swale paintbrush, also known as the glowing Indian paintbrush, has bright yellowish flowers which produce nectar and support pollinators. Its rarity means not much is known about habitat requirements, but it's generally found in seasonally wet grasslands.

"The Fish and Wildlife Service has had its eye for decades on the need to protect the swale paintbrush, but just always found some reason not to do it," Robinson stressed. "Which is the sad reality for so many imperiled plants and animals that need protection sooner rather than later."

A 2022 study found protections offered by the Endangered Species Act often kick in too late to fully recover declining species. Published in the journal PLoS ONE, researchers found over the past three decades, species remained on waiting lists for protection far longer than the Endangered Species Act intends.


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The Wyoming Game and Fish Department is moving forward with the Sublette Pronghorn migration corridor designation process.

Josh Metten, Wyoming field manager with the Theodore Roosevelt Conservation Partnership, said the move is an important step to protect key spots along the iconic route between Rock Springs and Grand Teton National Park.

That includes places where animals get corralled and funneled into bottlenecks, and places herds recover from winter by hunkering down to feed on green-up vegetation.

"It's really important for the whole herd, but especially females that are getting ready to have their fawns," said Metten. "So making sure that there is appropriate management of development in these high priority areas, like stopovers and bottlenecks."

A recent threat evaluation released by Game and Fish found that the corridor is at "high risk" of being lost due to human activity.

In just the past three years, high priority areas saw developments - including a 3,500 well gas field, a state gas auction leasing 640 acres for $19 an acre within a known bottleneck, and more subdivisions - according to Wyofile.

Metten said he believes protecting the corridor is not an either-or proposition.

Thanks to advanced GPS collar data tracking herd movements, he said all stakeholders can sit down at the same table and find ways to accommodate multiple uses of adjacent lands - including energy production, housing development, and increased access to outdoor recreation.

"These are all things that we can still have on the landscape, if we do it right," said Metten. "Using a science-based approach to identify what are the most important areas to conserve, and we set appropriate limits in areas that are needed."

Public meetings are set for this Thursday in Pinedale, November 29 in Green River, and November 30 in Jackson. The agency will accept public comments through January 5.

Metten said enjoying wildlife like the Sublette Pronghorn herd is a big reason why hard-working families are proud to call Wyoming home.

"We're thankful to Gov. Gordon and the staff and Wyoming Game and Fish Department," said Metten, "for their commitment to ensuring that this irreplaceable wildlife resource is sustained into the future."