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Court Overturns Federal Authorization to Kill 72 Grizzlies Near Yellowstone

For Immediate Release, May 25, 2023


Andrea Zaccardi, Center for Biological Diversity, (303) 854-7748,
Megan Backsen, Western Watersheds Project, (719) 297-2493;


PINEDALE, Wyo.— The U.S. 10th Circuit Court of Appeals ruled today that the U.S.Fish and Wildlife Service’s authorization of the killing of up to 72 grizzly bears on public land just outside of Yellowstone National Park violated federal law.

Meant to accommodate private grazing operations in grizzly habitat, the 2019 grazing authorization would have allowed an unlimited percentage of females to be killed in response to livestock conflict, despite the significance of breeding bears to the species’ recovery. But now the court has remanded the decision to the agencies to fix the legal deficiencies.

“We’re hopeful that in reconsidering their flawed analysis, the agencies will spare dozens of female grizzly bears previously sentenced to death by the Trump administration,” said Andrea Zaccardi, legal director of the Center for Biological Diversity’s carnivore conservation program. “This ruling confirms that federal officials can’t sidestep the law to allow grizzly bears to be killed on public lands to appease the livestock industry.”

The court found that among other issues, the U.S. Fish and Wildlife Service’s failure to consider limiting the number of female grizzly bears that could be killed was arbitrary and capricious because killing too many females could jeopardize the grizzly bear population in the project area. In so holding the court acknowledged the importance of protecting female grizzly bears for grizzly bear recovery.

“Today’s decision is a victory not only for endangered grizzly bears but for all wildlife in the Upper Green River Area,” said Megan Backsen, Tenth Circuit attorney for WWP. “The Court recognized that the Forest Service cannot ignore its own experts, particularly when those experts warn that a decision will harm those species that depend on intact ecosystems for their very survival.”

The grazing program area, approved by the U.S. Forest Service in 2019, encompasses the headwaters of the Green and Gros Ventre rivers and parts of two designated wilderness areas in the Bridger-Teton National Forest. The area provides important habitat for Yellowstone grizzly bears — listed as threatened under the Endangered Species Act — and other imperiled fish and wildlife species.

The challenged decision authorized the killing of up to 72 grizzly bears over the 10-year life of the reauthorized grazing program. The decision placed no limits on killing female bears or cubs, even though females with cubs live where the proposed killing would be permitted.

The judges also ruled that the Forest Service failed to follow its own Forest Plan requirements regarding wildlife habitat protections for migratory birds. Some 96% of the lands approved for livestock is zoned in the Forest Plan for a wildlife protection emphasis instead.

“Throughout this case, the Forest Service has tried to run away from its wildlife habitat commitments  made to the public in its Forest Plan,” said Jonathan Ratner, Western Watersheds Project’s Wyoming Office Director. “We are pleased to see that the court understands that the promises made in the Forest Plan are made to the American people and the wildlife that lives on these lands.”

Dr. John Carter of Yellowstone to Uintas Connection said, “We have collected data within the allotments that shows how much degradation has been caused by livestock. We have provided reports to the Forest Service but they feel they can simply ignore the data. We hope and expect that the Forest Service starts putting its duties to land and the American people ahead of the interests of a few ranchers”

“Before grizzly bears can be recovered and delisted, we need safeguards in place to ensure that the breeding population gets adequate protections from the depredations of the livestock industry,” said Mike Garrity, Executive Director of the Alliance Wild Rockies. “We are thrilled that the court sent the agencies back to the drawing board.”

The Center for Biological Diversity, Sierra Club, Western Watersheds Project, Alliance for the Wild Rockies, and Yellowstone to Uintas Connection filed two separate suits on March 31, 2020 challenging the agencies’ decisions. Although the suit was originally filed in the U.S. District Court of Columbia, the lawsuit was later transferred to the U.S. District Court of Wyoming. The U.S. District Court of Wyoming issued a ruling upholding the agencies’ decisions on May 17, 2022. Today’s opinion overturns that decision.


The Center for Biological Diversity is a national, nonprofit conservation organization with more than 1.7 million members and online activists dedicated to the protection of endangered species and wild places.

The Sierra Club is America’s largest and most influential grassroots environmental organization, with more than 3.5 million members and supporters. In addition to protecting every person’s right to get outdoors and access the healing power of nature, the Sierra Club works to promote clean energy, safeguard the health of our communities, protect wildlife, and preserve our remaining wild places through grassroots activism.

Western Watersheds Project is a non-profit conservation group with a mission to restore western watersheds for wildlife. 

Alliance for the Wild Rockies has a mission to secure the ecological integrity of the Wild Rockies Bioregion through citizen empowerment and the application of conservation biology, sustainable economic models and environmental law. 

Yellowstone to Uintas works to restore fish and wildlife habitat in the Yellowstone to Uintas Corridor through the application of science, education and advocacy.

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