Wild Bison Welfare and Conservation

North American bison have recovered from near-extinction but face ongoing challenges including habitat fragmentation, brucellosis management, and genetic bottlenecks.

Key Facts

Wild bison were reduced from approximately 30 million in the 18th century to fewer than 1,000 by 1890
Current free-roaming wild bison populations exist primarily in Yellowstone National Park and a small number of other reserves
Brucellosis — a bacterial disease — causes controversy between bison conservation and cattle ranching interests
Bison at Yellowstone are culled or transferred when population growth exceeds park capacity, a management practice that raises welfare concerns
Genetically pure bison without cattle gene introgression are conservation priorities — most ranched bison carry cattle genetics

Welfare Considerations

Wild bison welfare involves the intersection of individual animal needs and population-level conservation goals. Culling programs at Yellowstone cause individual animal suffering in service of population management. Brucellosis testing and vaccination programs subject bison to repeated human handling and capture stress. Long-term welfare is best served by expanding wild bison habitat to allow natural population regulation through space and resources.

What You Can Do

Support organisations working to expand wild bison habitat through land acquisition and easements
Donate to programs managing genetically pure bison herds with conservation as the primary goal
Advocate for science-based bison management that considers animal welfare alongside ecological objectives
Choose ranched bison meat only from operations with documented welfare standards and conservation commitments