Colorful pool of steaming water in Yellowstone NP

Colorful pool of water and bacteria at Yellowstone NP

Panorama of Lamar Valley in Yellowstone NP in the Fall

Golden evening light along the Madison river in Yellowstone NP

Setting sun cast golden light across the Madison river in Yellowstone NP

Bison with a mouthful of green grass

A Bison eating green grass along the road in Grnad Teton NP

Golden light across the grass

Setting sun cast golden light across the grass along the Madison river in Yellowstone NP

Bull Elk chasing female elk along Madison river

Bull Elk chasing female elk during the rut along Madison river in Yellowstone NP

Buffalo feeding along the Yellowstone river

Buffalo feeding by the Yellowstone river in Hayden Valley in Yellowstone NP

Grizzly bear facing camera

Bear was feeding in Grand Teton NP

People in steam along Madison river in Yellowstone NP

Steaming geysers draw crowds along the Madison river in Yellowstone NP

Evening light along the Madison river in Yellowstone NP

Buffalo in Lamar Valley

Panorama of Buffalo in Lamar Valley during Fall in Yellowstone NP

Steam rising around the Madison river in Yellowstone

Steam rising on a chilly Autumn morning along the Madison river in Yellowstone NP

Canadian Geese standing in grass

Sideview of buffalo standing by steaming water

Sideview closeup of Pronghorn Antelope

Pronghorn Antelope looking right

One bull elk moving through downed trees

One bull elk moving through downed trees in the Fall color

Buffalo standing by steaming river in Yellowstone NP

Sideview of coyote running in grass

Sideview of coyote looking toward the camera running in grass

Osprey perched looking for prey

Coyote resting in long grass

Osprey with wings extended

Osprey with fish leaving water

Osprey flying away with a fish

Geese swimming in morning fog

Playful Bison calves

Two Bison calves playing in Yellowstone NP

American Kestrel perched on a limb

Closeup of Male Pronghorn Antelope

Closeup of male Pronghorn Antelope facing right

Male Pronghorn Antelope in tall grass

Male Pronghorn Antelope walking in tall grass in Yellowstone NP