Bison in Heavy Snow

An American Bison (Bison bison) forages in heavy snow. Yellowstone National Park, Wyoming, 2013.

Migration

A herd of American Bison (Bison Bison) searches for forage. Yellowstone National Park, Wyoming, 2013.

Shaking Bison

A bison shakes off snow that accumulated on its back during the night. Yellowstone National Park, Wyoming, 2013.

American Bison

An American Bison (Bison bison) grazes in a field in Grand Teton National Park, Wyoming

Mormon Row Panorama

American Bison (Bison bison) graze in front of an historic Mormon Row barn, Grand Teton National Park, Wyoming

Bison and Mormon Barn

American Bison (Bison bison) graze in front of an historic Mormon Row barn, Grand Teton National Park, Wyoming

Bison on the Yellowstone

An American Bison (Bison bison) drinks from the Yellowstone River. Yellowstone National Park, Wyoming, 2011.

American Bison

American Bison in morning light, Yellowstone National Park, Wyoming.

Frosted Bison

Frost-encrusted bison on a foggy morning in the Lamar Valley, Yellowstone National Park, Wyoming, 2011.

Bison Portrait

American Bison, Yellowstone National Park, Wyoming, 2011.

Bison Dust Bath

An American Bison takes a dust bath in a wallow on the banks of the Yellowstone River, Yellowstone National Park.

Bison Abstract

American Bison (captive). Denver, Colorado, 2008.


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