Wolf Pack, Yellowstone NP
Wolf Pack, Yellowstone NP
Wolf Pack, Yellowstone NP
Wolves and Ravens on the Bison Kill, Yel...
End of the Kill, Yellowstone NP
Bison Study, Lamar Valley, Yellowstone N...
Bison Study, Lamar Valley, Yellowstone N...
Bison and Calf, near Mammoth Springs, Ye...
Bison, near Mammoth Springs, Yellowstone...
American Bald Eagle, Maddison River, Yel...
American Bald Eagle, Maddison River, Yel...
Hayden Valley Swans, Yellowstone Nationa...