Yosemite National Park © John Leifer

Rocky Mountain National Park © John Leifer

Acadia National Park © John Leifer

Acadia National Park © John Leifer

Squaw Creek National Wildlife Refuge Resting Eagle © John Leifer

Yellowstone National Park County © John Leifer

Zion National Park © John Leifer

Grand Teton National Park © John Leifer

Grand Teton National Park © John Leifer