Library Search

A bison grazes at American Prairie.
(Ami Vitale for Earthjustice)
Press Release February 6, 2026

American Prairie Challenges BLM’s Proposed Revocation of Bison Grazing Permits

The administration’s proposal sets a dangerous precedent on public land management, reversing longstanding practice
Bison graze in Yellowstone National Park. Earthjustice's Northern Rockies office has fought to protect wildlife in this region for 25 years. (National Park Service)
Press Release February 24, 2025

Fort Peck Tribes, Conservation Groups Move to Defend Yellowstone Bison Plan in Court

Motion to intervene filed in Montana suit over Yellowstone’s plans for America’s national mammal
A small group of bison roam the Snake Butte Pasture on the Fort Belknap Indian Reservation in Montana. (<a href="http://conservationmedia.com/">ConservationMedia</a>)
Article November 1, 2023

In Montana, Wild Bison Are Back, and an Entire Ecosystem Is Healing

The return of bison ten years ago to their home on tribal lands at the Fort Belknap Indian Reservation has helped restore an ecosystem and tribal culture.
document February 24, 2025

Motion to Intervene: Yellowstone Bison

The Fort Peck Assiniboine and Sioux Tribes, alongside conservation groups, filed a motion to join a lawsuit to defend Yellowstone National Park’s science-based bison management plan.
A bison grazes at American Prairie.
(Ami Vitale for Earthjustice)
feature October 7, 2022

How We Helped Bison Make a Huge Comeback

Earthjustice is using the power of the law to restore and recover wildlife — including bison.
The Gallatin Range in Southwest Montana. (Jared Lloyd / Getty Images)
feature September 23, 2025

The Intermountain West: Regional Spotlight

Our teams in Bozeman, Montana, and Denver, Colorado, have spent decades fighting to defend the web of life, to protect people’s health, and to advance a just transition to clean…
U.S. President Donald Trump speaks during inauguration ceremonies in the Rotunda of the U.S. Capitol on Jan. 20, 2025, in Washington, D.C. (Kevin Dietsch / Getty Images)
feature April 29, 2025

Where the Trump Administration is Going and Where We Stand

Tracking how Earthjustice is holding the Trump administration and Congress accountable — while making progress in states, in public utility commissions, and overseas.
Bison are a keystone species, creating a cascade of environmental conditions that benefit countless other wildlife. As bison graze, they prune and encourage growth of native grasses, fertilize the soils, and carve out habitat for smaller creatures. The Northern Rockies office has protected bison and their iconic prairie ecosystem for decades. (Ami Vitale for Earthjustice)
feature August 7, 2023

Northern Rockies

Highlights of how Earthjustice's Northern Rockies office has leveraged the power of partnership and the law to defend communities, sacred lands and wildlife, and clean air and water.
document September 30, 2021

WI Wolves – Declaration of Brian Bisonette

Declaration of Brian Bisonette in support of motion for preliminary injunction to stop Wisconsin from holding a wolf hunt in November 2021.
Press Release August 29, 2022

American Prairie to Defend Bison Grazing on North-Central Montana Public Lands

Earthjustice to represent American Prairie in the appeal
document February 3, 2020

Draft Step-Down Plan Bison and Elk Management: A Review

In 2007 the National Elk Refuge (NER) and Grand Teton National Park (GRTE, collectively the Refuge and Park) published their Bison and Elk Management Plan (BEMP) and Environmental Impact Statement…
Press Release May 24, 2011

Groups Seek To Shield Bison From Over-reaching Lawsuit

Winter foraging north of Yellowstone Park at issue
Press Release June 19, 2013

Montana's Highest Court Clears Way for Return of Wild Bison

Bison transfer to Fort Belknap tribes to proceed
Press Release April 8, 2014

Victory for Wild Bison in Montana

Montana judge rejects effort to classify wild bison as“livestock”
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: Victory January 7, 2013

Court Rules Bison Can Roam

Rejects unreasonable demand to return to widespread buffalo slaughter
One of the newborn bison calves, born at Montana's Fort Peck in the spring of 2012.
(Bill Campbell for Earthjustice)
Article October 16, 2013

Bison: Wildlife or Livestock?

As wild bison return to the plains, ranchers target them as livestock
A monarch butterfly on goldenrod in Schaumburg, Illinois. (Zara / 500px)
Press Release December 17, 2025

House Republicans Advance Bill to Gut Endangered Species Act

Bill would reduce critical protections for imperiled plants and animals