Wood Bison Conservation and Welfare

The wood bison is the largest land animal in North America and a conservation success story, recovering from near-extinction to over 10,000 individuals, with ongoing welfare challenges from disease management and habitat constraints.

Key Facts

Wood bison nearly went extinct by the 1950s, reduced to around 200 individuals before conservation efforts began
The species was down-listed from endangered to threatened in Canada after successful reintroduction programmes
Wood bison are significantly larger than plains bison, with bulls weighing up to 900 kg
Brucellosis and bovine tuberculosis management has involved controversial disease testing and culling programmes
Restored wood bison herds now range across parts of the Northwest Territories, Yukon, Alberta, and Alaska

Welfare Considerations

Wood bison welfare is significantly affected by disease management programmes designed to prevent transmission to domestic cattle. Brucellosis testing involves repeated capture, restraint, and blood sampling that causes acute stress. Culling of test-positive animals raises direct welfare concerns. Fence lines and landscape fragmentation restrict natural herd movements and access to traditional mineral licks and grazing areas. The social complexity of bison herds, with strong dominance hierarchies and calf bonding, means population management that disrupts herd structure carries welfare costs.

What You Can Do

Support the Wood Bison Recovery Program and advocate for continued herd expansion
Campaign for disease management approaches that minimise lethal control and prioritise vaccine development
Back Indigenous-led conservation programmes that integrate traditional ecological knowledge with wood bison management
Donate to wildlife health monitoring programmes that track bison disease status non-invasively