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Grizzly bear (Ursus arctos horribilis) walking, Yellowstone National Park, Wyoming, United States of America, North America

Male Williamson's sapsucker (Sphyrapicus thyroideus) poking out of its nest hole, Yellowstone National Park, Wyoming, United States of America, North America

Bison (Bison bison) calf, Yellowstone National Park, Wyoming, United States of America, North America

Bison (Bison bison) cow in the winter, Yellowstone National Park, Wyoming, United States of America, North America

Bull elk (Cervus canadensis) feeding in the winter, Yellowstone National Park, Wyoming, United States of America, North America

Fremont Indian petroglyphs in Capitol Reef National Park, Utah, United States of America, North America

Bison (Bison bison) cow nursing her calf, Yellowstone National Park, Wyoming, United States of America, North America

Cinnamon-colored black bear (Ursus americanus) walking, Yellowstone National Park, Wyoming, United States of America, North America

Bison (Bison bison) bull in the snow, Yellowstone National Park, Wyoming, United States of America, North America

Volcanic boulders on Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America

Two sub-adult grizzly bears (Ursus arctos horribilis), Glacier National Park, Montana, United States of America, North America

Bison (Bison bison) cows sparring, Yellowstone National Park, Wyoming, United States of America, North America

Bison (Bison bison) bull in the snow, Yellowstone National Park, Wyoming, United States of America, North America

Pronghorn (Antilocapra americana) buck, Yellowstone National Park, Wyoming, United States of America, North America

Line of Bison (Bison bison) crossing the Lamar River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Greater roadrunner (Geococcyx californianus) in captivity, Living Desert Zoo And Gardens State Park, New Mexico, United States of America, North America

Cinnamon black bear (Ursus americanus), Glacier National Park, Montana, United States of America, North America

Bison (Bison bison) cow nursing her calf, Yellowstone National Park, Wyoming, United States of America, North America

Pronghorn buck (Antilocapra americana), Lamar Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bison (Bison bison) calf, Yellowstone National Park, Wyoming, United States of America, North America

Bison (Bison bison) bull among yellow wildflowers, Yellowstone National Park, Wyoming, United States of America, North America

Brown-headed cowbird (Molothrus ater), Yellowstone National Park, Wyoming, United States of America, North America

Coyote (Canis latrans) in the snow, Yellowstone National Park, Wyoming, United States of America, North America

Bison in the Lamar Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Bighorn sheep (Ovis canadensis) ram, Clear Creek County, Colorado, United States of America, North America

Coyote (Canis latrans) in the snow, Yellowstone National Park, Wyoming, United States of America, North America

Bison (Bison bison) calf in front of its mother, Yellowstone National Park, Wyoming, United States of America, North America

Bison (Bison bison) calf, Yellowstone National Park, Wyoming, United States of America, North America

Sand dunes, Great Sand Dunes National Park and Preserve, Colorado, United States of America, North America

Bison in the Lamar Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Orange clouds at dawn over the badlands, Goblin Valley State Park, Utah, United States of America, North America

American pipit (Anthus rubescens rubescens), San Jacinto Wildlife Area, California, United States of America, North America

Panoramic photo of Beauty Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Grizzly Bear (Ursus arctos horribilis) walking, Yellowstone National Park, Wyoming, United States of America, North America

Run off area near Black Pool Spring, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Chromatic Pool, Upper Geyser Basin, Yellowstone National Park, Wyoming, UNESCO World Heritage Site, Wyoming, United States of America, North America

Alaskan brown bear (Ursus middendorffi), Katmai National Park and Preserve, Alaska, United States of America, North America

American red squirrel (red squirrel) (Spruce squirrel) (Tamiasciurus hudsonicus), Custer State Park, South Dakota, United States of America, North America

American red squirrel (red squirrel) (Spruce squirrel) (Tamiasciurus hudsonicus), Custer State Park, South Dakota, United States of America, North America

Grizzly bear (brown) bear (Ursus arctos), Moraine Creek (River), Katmai National Park and Reserve, Alaska, United States of America, North America

Grizzly bear (brown bear) (Ursus arctos), Moraine Creek (River), Katmai National Park and Reserve, Alaska, United States of America, North America

Great kiskadee (Pitangus sulphuratus) a large colorful tyrant flycatcher, common in the Pacific North, Esperanza, Nosara, Guanacaste, Costa Rica

Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Grizzly bear (brown bear) (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America

An adult American red squirrel (Tamiasciurus hudsonicus), Leigh Lake, Grand Teton National Park, Wyoming, United States of America, North America

Adult brown pelicans (Pelecanus occidentalis), Isla Ildefonso, Baja California Sur, Mexico, North America

Grizzly bear (brown bear) (Ursus arctos), Moraine Creek (River), Katmai National Park and Reserve, Alaska, United States of America, North America

Grizzly (brown) bear (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America

Red-tailed hawk (Buteo jamaicensis), juvenile, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

American pika (Ochotona princeps), Shoshone National Forest, Wyoming, United States of America, North America

Grizzly (brown) bear (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America

Brown pelicans (Pelecanus occidentalis) in flight formation at sunset near Isla Rasita, Baja California, Mexico, North America

An adult brown pelican (Pelecanus occidentalis) in flight at Punta Colorado, Isla San Jose, Baja California Sur, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), on Isla Ildefonso, Baja California Sur, Mexico, North America

White-crowned sparrow (Zonotrichia leucophrys), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Brown pelican (Pelicanus occidentalis), J. N. "Ding" Darling National Wildlife Refuge, Florida, United States of America, North America

Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Immature American robin (Turdus migratorius), Columbus, Montana, United States of America, North America

Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Coastal brown bear, Ursus arctos, Lake Clark National Park, Alaska, United States of America, North America

Petroglyph of male figure carved 1000 years ago by Fremont Native American people in the iron oxide 'desert varnish' on the sandstone of Cub Creek Valley in this fossil park, Dinosaur National Monument, Utah, United States of America (USA), North America

Petroglyphs carved 1000 years ago by Fremont Native American people in the iron oxide 'desert varnish' on the sandstone of Cub Creek Valley in this fossil park, Dinosaur National Monument, Utah, United States of America (USA), North America

Petroglyphs carved 1000 years ago by Fremont Native American people in the iron oxide 'desert varnish' on the sandstone of Cub Creek Valley in this fossil park, Dinosaur National Monument, Utah, United States of America (USA), North America

Coyote buttes north, the wave, sandstone formed by wind and water, paria wilderness area, arizona, usa

Claws of bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Brown bear, alaska. Brooks falls. Ursus arctos. Bear catching leaping sockeye salmon during the summer at a waterfall

Coyote buttes north, juniper tree, juniperus, wacholder baum, sandstone formed by wind and water, paria wilderness area, arizona, usa

Coyote buttes north, fragile sandstone formed by wind and water, paria wilderness area, arizona, usa

Coyote buttes north, fragile sandstone formed by wind and water, paria wilderness area, arizona, usa

Coyote buttes north, the wave, sandstone formed by wind and water, paria wilderness area, arizona, usa

Brown bears, ursus arctos. Two bears at waterfall waiting to catch leaping salmon; summer; long exposure time usa, alaska. Brooks falls

Brown bear, alaska. Brooks falls. Ursus arctos. Bear catching leaping sockeye salmon during the summer at a waterfall

Horseshoe bend, colorado river, glen canyon national recreation area, page, arizona, usa, north america

Coyote buttes north, fragile sandstone formed by wind and water, paria wilderness area, arizona, usa

Coyote buttes north, fragile sandstone formed by wind and water, paria wilderness area, arizona, usa