Pronghorn herd
A herd of pronghorn resting on a hill outside of Gardiner, Montana.
Mule Deer
Mule deer outside of Gardiner, Montana
Bighorn Sheep
Bighorn sheep outside of Gardiner, Montana
Travertine terraces at Mammoth Hot Springs, Yellowstone National Park in winter
Travertine terraces are formed from thermal water rising through limestone. Heat-loving bacteria and algae add vivid colors to the chalky-white travertine.
Unusual green and pink colors caused by thermophilic microbes
Unusual colors in the travertine terraces are caused by thermophilic microbes
Upper travertine terraces at Mammoth Hot Springs, Yellowstone National Park in winter
Coyote in snow
Coyote with bison in background
Coyote in front of Lamar River
A coyote follows Yellowstone's Lamar River in winter
Bighorn sheep takes a stumble
Even the sure-footed Bighorn Sheep sometimes fall down on steep hills.
Ruffed grouse climbs a snow bank
Bison with snow falling
Bison feed on grass during a snowfall along Soda Butte Creek.
Magpie in snow
Magpie perched in snow above Soda Butte Creek
Coyote in a snow storm
Coyote obscured by heavy snow along the Lamar River
