Bison

 

The American bison has a long and varied history in the United States.

About 150 years ago, nearly 30 million bison roamed the Great Plains until a mass slaughter began in the early 1800s. By the late 1880s, fewer than 1,000 bison remained.

Bison, a keystone species, help create habitat on the Great Plains for many different species, including grassland birds and even many plant species. As bison forage, they aerate the soil with their hooves, which aids in plant growth, and disperse native seeds, helping to maintain a healthy and balanced ecosystem.

Over the last decade, the conservation community has contributed significantly to bison conservation, helping to bring back America’s national mammal. Because there are no longer millions of animals migrating across the plains, the bison is considered ecologically extinct but conservation herds of 1,000 or more bison are being established to create a metapopulation, allowing for the species to once again play an important ecological role on our prairie grasslands. 

Defenders' Impact

Defenders supports bison conservation on both public and tribal lands. We partner with national parks inhabited by bison, including Yellowstone, Badlands and Wind Cave National Parks.

We also support bison conservation efforts at the American Prairie Reserve in Montana and Soapstone Prairie Natural Area in Colorado. Our partnerships over the years with Native American tribes have led to the establishment of major buffalo herds in Montana by the Fort Peck Assiniboine and Sioux Tribes, Fort Belknap Assiniboine and Gros Ventre tribes and the Blackfeet Nation.

We are engaged in land and natural resource planning efforts with state federal agencies, as well as advocating for better consideration of bison as a species of concern on Forest Service lands.

Defenders and our partners are also paving the way for Yellowstone bison just outside park boundaries by starting the Yellowstone Bison Coexistence Program in 2011 as a collaborative effort aimed to help landowners coexist with wild bison on the landscape outside the Park.