North American Bison in the wild
Bull bison crossing the Firehole River in Yellowstone National Park, Wyoming
A closer look at the head of this magnificent animal
Bison alongside the Firehole River
Bison in Theodore Roosevelt National Park
A bull bison moves through Theodore Roosevelt National Park in North Dakota
This cow bison is perhaps thinking of the frost around and on her and considering the onset of winter in Yellowstone National Park
Moving through the morning chill
Bison herd in Yellowstone National Park moving through the first signs of winter
A bull and cow wood bison in the Northwest Territories region of Canada
Bison calf on a frosty morning in the Lamar Valley in Yellowstone National Park, Wyoming
A bison bearing frost from a Fall morning
A chilly morning in Yellowstone National Park for the bison.
Male bison moving across the Hayden Valley in Yellowstone National Park
A bull wood bison standing in woodland in the Northwest Territories region of northern Canada