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Silver-tipped grizzly 399 surveys a sage-filled meadow looking for potential dangers for her three young cubs in Grand Teton National Park, Wyoming, June 20, 2011.
(Photo courtesy of Thomas D. Mangelsen.)
Press Release August 30, 2017

Groups Challenge Decision to Remove Yellowstone Grizzly Protections

Delisting defies best available science, sidesteps important legal safeguards

A juvenile grizzly stands in a summer wildflower field in Yellowstone National Park.
(Photo courtesy of Tom Murphy)
Press Release January 8, 2018

Tribal, Conservation Groups Urge Court to Restore Endangered Species Protections for Yellowstone Grizzlies

Trophy hunting looms, absent federal protections

Press Release May 15, 2000

Yellowstone River Wins in Court

Ruling Ensures Greater Caution in Future Decisions

A wolf in the Firehole area of Yellowstone National Park.
(Jim Peaco / National Park Service)
From the Experts March 17, 2022

A New Vision for Wolf Conservation After 150 Years of Yellowstone

Emergency protections are needed for the gray wolf after the Northern Rockies sees the worst persecution of wolves in a century.

Grizzly bears. Federal biologists acknowledge that population growth of the Yellowstone grizzly bear has flattened over the past decade.
(Photo courtesy of Tom Murphy)
Press Release June 29, 2017

Groups Challenge Decision to Remove Protections for Yellowstone Grizzly

Delisting defies the best available science and sidesteps important legal safeguards

Yellowstone National Park.
(Photo courtesy of Brook Ward)
Press Release April 25, 2017

Don’t Mine Yellowstone: Senator Jon Tester Introduces Legislation to Protect the Doorstep to the World’s First National Park

The legislation protects private property rights while enacting a permanent withdrawal on the public lands

Press Release March 4, 2008

Yellowstone Area Landowners: Leave The Buffalo Alone

Buffalo Field Campaign and Horse Butte landowners seek increased tolerance for bison in cattle-free zone outside western boundary of Yellowstone National Park

Press Release May 20, 1999

Montana Groups Ask Judge to Intervene and Protect Yellowstone River

Six Montana conservation organizations filed a lawsuit against the Army Corps of Engineers for violating environmental laws and ignoring the warnings of scientists as the agency approves permits on the Yellowstone River.

Silver-tipped Grizzly 399, a Yellowstone grizzly bear, surveys a meadow, looking for potential dangers for her three young cubs.
(Thomas D. Mangelsen)
Press Release: Victory July 8, 2020

9th Circuit Upholds Endangered Species Protections for Yellowstone Grizzlies

Court of appeals sends U.S. Fish and Wildlife Service back to the drawing board

Press Release December 9, 2008

Bush Administration to Yellowstone: Bring in the Snowmobiles

New rule allows more than twice as many snowmobiles as scientists recommend

Press Release January 11, 2001

Conservation Groups Intervene to Protect Yellowstone from Snowmobile Manufacturer's Lawsuit

Conservation groups will defend the recent snowmobile phaseout in Yellowstone and Grand Teton National Parks against a lawsuit brought by snowmobile manufacturers.

Press Release January 11, 2001

Conservation Groups Intervene to Protect Yellowstone from Snowmobile Manufacturer's Lawsuit

Conservation groups announced that they will defend the recent snowmobile phaseout in Yellowstone National Park against a lawsuit brought by snowmobile manufacturers.

Grizzly 610 walks down a park road with her three cubs in springtime, April 13, 2012.
(Photo courtesy of Thomas D. Mangelsen)
Press Release: Victory September 24, 2018

Grizzlies Saved: Court Stops Trophy Hunt of Yellowstone’s Iconic Bears

Judge rules Trump administration unlawfully removed federal protections

Un oso pardo de Yellowstone merodea un prado para evitar peligros potenciales para sus tres cachorros.
(THOMAS D. MANGELSEN)
Press Release: Victory July 8, 2020

Tribunal Protege a Osos Grizzlies de Yellowstone Mediante Ley de Especies en Peligro de Extinción

El tribunal de apelaciones envía de regreso su fallo al Servicio de Pesca y Vida Silvestre de los Estados Unidos

Press Release: Victory November 23, 2011

Protections Upheld for Yellowstone Grizzly Bears

Federal appeals court rules

Press Release: Victory September 22, 2009

Protections Restored for Yellowstone Grizzly Bears

Climate change reducing key food source

Press Release June 4, 2007

Lawsuit Filed to Restore Protections for Yellowstone Grizzly Bears

Lack of habitat protection and warming temperatures threaten bears

Press Release October 30, 2003

Administration Approves Power Plant that Threatens Visibility in Yellowstone

Administration overrules earlier findings of adverse air impacts