LARAMIE, Wyo. -- Wildlife managers across the West have a new tool when it comes to protecting iconic big game.

A new report published by the U.S. Geological Survey (USGS) provides detailed maps of GPS-tracked migration routes for mule deer, elk, pronghorn, moose and bison.

Matthew Kauffman, a USGS wildlife researcher, professor at the University of Wyoming, and the report's lead author, said stakeholders from conservationists to transportation agencies have long realized it's critical to understand how big game move across Wyoming's landscapes.

"[They] are ready to roll up their sleeves and go to work to enhance and maintain the connectivity of these migration corridors," Kauffman observed. "And now they have a tool that can guide that on-the-ground work."

Development across the West, from energy production to expanding suburbs, has created roadblocks on routes used by wildlife for thousands of years.

Kauffman stated the new maps provide a blueprint for helping animals get back on track. Conservationists are hopeful the maps also can be used to monitor and limit the spread of contagious diseases, such as chronic wasting disease.

Kauffman added the research confirms migration is how most animals earn their living in western states.

Baby greens sprout up in lower elevations in early spring, and as temperatures rise, mule deer and other ungulates ride what Kauffman calls a green wave into higher elevations where their favorite food pops up next.

Climate change also is impacting migration. Longer and more severe drought has altered when and where food is available along historical corridors.

"Drought disrupts that green wave, and makes it more difficult for animals to surf," Kauffman explained. "They still try, they do their best given the drought conditions, but they just can't be in the right place at the right time."

The new study builds on more than two decades of research by state wildlife agencies including GPS tracking-collar data, mapping more than 40 big-game migration routes in Arizona, Idaho, Nevada, Utah and Wyoming.

Kauffman verified the maps are available to state and local agencies, and other stakeholders working to keep migration corridors and animal populations viable in Wyoming and across the West.


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Virginia's Marine Resources Commission is ending the winter blue crab harvest prohibition.

Crabbing is permitted from March to the middle of December. Extending the harvesting season targets adult female crabs which can harm this species' future. Environmental groups argued the Blue Crab Stock Assessment Committee's research does not support increasing the harvest.

Chris Moore, Virginia executive director for the Chesapeake Bay Foundation, said recent winter dredge survey results showed it is an ill-timed decision.

"For the last 8 or 9 years or so, we had actually seen higher numbers of adult females every year going back to 2016 except for 2022," Moore outlined. "That was the year where we actually saw the lowest number of crabs total in that winter dredge survey."

The most recent winter dredge survey showed a continued decline of about 20 million blue crabs in Chesapeake Bay. Moore noted the committee's decision is preliminary and depends on several previous determinations, ranging from the season's duration, number of participants, allowable catch and harvest location. A final decision is set for September.

Reopening the winter harvest will not endanger or eliminate blue crabs from Virginia waterways due to thresholds for the population. Moore thinks the committee should wait for a stock assessment with Maryland and the National Oceanic and Atmospheric Administration to be completed. Since the last one was done in 2011, he argued more is known about blue crabs.

"We continue to learn more about the population dynamics of the blue crab," Moore emphasized. "We continue to learn more about some of the predators of the blue crab, like catfish, and so we really need to be thinking about what is the state of the resource now when it comes to managing the species."

Moore added the stock assessment's results can better determine how to manage blue crab populations. Studies show around a quarter of the female blue crab population was removed from Chesapeake Bay by fishing in 2023, below both the threshold to pause the harvest and the target for sustainable blue crab fishing.


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The Bureau of Land Management says it will start a wild horse roundup in Wyoming's White Mountain area, but wildlife advocates say the plan exceeds the agency's authority.

The BLM aims to gather nearly 600 wild horses starting August 15, in an area northwest of Rock Springs - to prevent what it calls 'further deterioration' of the land health due to impacts from the animals.

The group Wild American Horse Conservation says the agency used incorrect data to reach that number, improperly including foal counts.

Suzanne Roy, executive director of the group, said bad numbers are a problem for the local eco-tourism business the horses support, through a Wild Horse Scenic Loop drive.

"We're very concerned that the BLM is playing with numbers to remove more horses than they're legally allowed to," said Roy. "And if they are allowed to proceed, it will reduce the herd to such a low number, you'll never be able to view the horses."

Roundups involve gathering horses into holding pens until they're adopted.

But Roy said there are more horses being held than the adoption market can absorb, and that difference costs taxpayers about $70 million a year.

Roundups are an alternate population control method to sterilization. But Roy said her group advocates instead for fertility control.

"Basically, it's called immunocontraception," said Roy, "and it's a vaccine that creates an immune response in the animals and it prevents fertilization."

Roy said this method is also reversible, which is important in case of unexpected population die-offs.

The BLM is a multiple-use agency charged with balancing numerous interests - including those of the public, grazing rights and multiple wildlife species.

James "Micky" Fisher - lead public affairs specialist with the BLM Wyoming field office - said the agency isn't opposed to fertility treatments, but they're more difficult to implement.

"Unfortunately, with herd management areas of this size and even larger ones," said Fisher, "the sheer number of horses that we're required to gather to get down to the appropriate management level, fertility treatments and darting practices, they're just - they're insufficient."

A larger roundup is currently underway across four Herd Management Areas in central Wyoming.

Fisher said the BLM started the roundup on July 1, to gather over 2,700 animals.




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Wildlife experts are warning people not to get too close to the animals in national parks as the summer travel season heats up. Overeager tourists can not only put themselves in danger, but threaten the animals.

Three million people visit Montana's Yellowstone national Park each year, and many want photos with the iconic Bison that are threatened and being reintroduced to the wild.

Chamois Anderson, senior representative for the Rockies and Plains program with Defenders of Wildlife, said while interaction with animals is part of the national park experience, it's important to give the bison their space - so tourists need to keep their distance.

"You know, they pull off the roadway to view bison, or maybe bears if they see one," said Anderson, "and they just want to get that selfie or that photo with their cellphone, and they approach these animals as if they're at a zoo. These are not zoos. These animals are very wild, and we need to keep them wild."

Anderson said she tells park visitors to stay at least 25 yards away from bison, and 200 yards from bears and wolves.

Defenders of Wildlife has released a video on YouTube describing what to consider when interacting with animals in Montana's Glacier and Yellowstone National Parks.

In North Carolina, Defenders of Wildlife's Senior Southeast Field Representative Tracy Davids said the group is going beyond educating tourists, and is also asking professional photographers to back off the remaining 20 or so Red Wolves in the eastern wetlands of the state.

"Particularly now during puppy season, we've had reports of photographers getting a little too close," said Davids. "Not so much putting themselves in jeopardy, but in a way that's harassing the wolves."

An 83-year-old woman from South Carolina sustained serious injuries when she was gored by a bison at Yellowstone in June.

The National Park Service says the bison was defending its space, came within a few feet of the woman and lifted her about a foot off the ground with its horns.

The Park Service says bison injure more people in Yellowstone than any other animal, typically one or two a year.