Charlie Billups: Hayden Valley, Yellowstone National Park Bison
Charlie Billups: Buffalo drinking water in Yellowstone River
Charlie Billups: Hayden Valley, Yellowstone National Park
Charlie Billups: American Bison at Hayden Valley
Charlie Billups: American Bison at Hayden Valley II
Charlie Billups: American Bison in Hayden Valley, Yellowstone
Charlie Billups: American Bison in Hayden Valley, Yellowstone, WY
Charlie Billups: American Bison at Hayden Valley, Yellowstone National Park
Charlie Billups: Proud American Bison at Hayden Valley, Yellowstone National Park
Charlie Billups: American Bison in the middle of the road in Hayden Valley, Yellowstone National Park
Charlie Billups: American Bison in Hayden Valley III
Charlie Billups: American Bison in Black and White
Charlie Billups: Bison in the water at Hayden Valley
Charlie Billups: The Bison of Hayden Valley
Charlie Billups: American Bison at the Yellowstone River
Charlie Billups: Lonely Bison in Hayden Valley, Yellowstone National Park
Charlie Billups: An American Bison crosses the road Hayden Valley, Yellowstone National Park.
Charlie Billups: Bison in Black and White