American Bison scratching belly on a boulder in Yellowstone National Park Wyoming.
Bull elk crossing the Madison River at sunrise in Yellowstone National Park Wyoming.
Bull elk with frost on its back posing at sunrise in Gibbon Meadows in Yellowstone National Park Wyoming.
Coyote with snow on its face walking out of a patch of sagebrush in Yellowstone National Park Wyoming.
Bull Elk walking in deep snow in Yellowstone National Park Wyoming.
American Bison posing in early morning light in Yellowstone National Park Wyoming.
Bull elk bugling in Hayden Valley in Yellowstone National Park Wyoming.
Two bighorn sheep rams interacting.
