Male Wood Bison (Wood Buffalo) (Bison bison athabascae), Alaska Highway, British Columbia, Canada, North America

Buffalo (Bison bison) herd crossing the Yellowstone River in Yellowstone National Park, Wyoming, USA.

Buffalo (Bison bison) herd crossing the Yellowstone River in Yellowstone National Park, Wyoming, USA.

Buffalo (Bison bison) herd crossing the Yellowstone River in Yellowstone National Park, Wyoming, USA.

Buffalo (Bison bison) herd crossing the Yellowstone River in Yellowstone National Park, Wyoming, USA.

Bison crossing road in front of snowmobile, Yellowstone National Park, Wyoming, USA, America

Plains Bison (Bison bison bison), Elk Island National Park, Alberta, Canada

Ft. Peck has an existing herd of bison that are not genetically pure Yellowstone bison. These run in a pasture next to the Yellowstone bison. The pure bsion are being held in a 20-acre pen until they're released to into a fenced pasture.

Ft. Peck has an existing herd of bison that are not genetically pure Yellowstone bison. These run in a pasture next to the Yellowstone bison. The pure bsion are being held in a 20-acre pen until they're released to into a fenced pasture.

Ft. Peck has an existing herd of bison that are not genetically pure Yellowstone bison. These run in a pasture next to the Yellowstone bison. The pure bsion are being held in a 20-acre pen until they're released to into a fenced pasture.

Ft. Peck has an existing herd of bison that are not genetically pure Yellowstone bison. These run in a pasture next to the Yellowstone bison. The pure bsion are being held in a 20-acre pen until they're released to into a fenced pasture.

Tribal singers welcome the bison home. Yellowstone bison are unloaded to a pasture on the Ft. Peck Indian reservation. The frst time in history Yellowstone bison have returned to the tribes.

Yellowstone bison are unloaded to a pasture on the Ft. Peck Indian reservation. The frst time in history Yellowstone bison have returned to the tribes.

Tribal singers welcome the bison home. Yellowstone bison are unloaded to a pasture on the Ft. Peck Indian reservation. The frst time in history Yellowstone bison have returned to the tribes.

Tribal singers welcome the bison home. Ft. Peck tribal leaders and members went to the pen holding the Yellowstone bison Wednesday to celebrate their return to tribal lands.

With the Yellowstone bison returning to the Ft. Peck Reservation, the Assiniboine and Sioux tribes held a winter round dance in a school gym.

Bison herd in Custer St. Park, SD

Bison herd in Custer St. Park, SD

Bison herd in Custer St. Park, SD

Bison Walking In The Early Morning Through The Snow, Elk Island National Park, Alberta, Canada

A large Wood bison bull (Bison bison athabascae) in snow, captive in Alaska Wildlife Conservation Center, Portage, Alaska, United States of America

Wood bison bull (Bison bison athabascae) portrait, Alaska Wildlife Conservation Center in South-central Alaska. The Alaska Wildlife Conservation Center played a big part in helping reintroduce these animals back into the Alaska wilds; Portage, Alaska, United States of America

Wood Bison (Bison Bison Athabascae) On Alaska Highway Near Liard Hot Springs, British Columbia, Canada