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Male Mountain Bluebird (Sialia currucoides) with food at the nest, 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
Delicate Arch in late afternoon, Arches National Park, Utah, United States of America, North America
Black bear (Ursus americanus) sow and two yearling cubs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Black bear (Ursus americanus) cub of the year or spring cub in a tree, Yellowstone National Park, Wyoming, United States of America, North America
Bryce Canyon, Bryce Canyon National Park, Utah, United States of America, North America
Scree field on the side of a sandstone butte, Capitol Reef National Park, Utah, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Black bear (Ursus americanus) cub of the year or spring cub climbing a tree, Yellowstone National Park, Wyoming, United States of America, North America
Box elder (boxelder maple) (maple ash) (Acer negundo) branch with yellow leaves in the fall, Capitol Reef National Park, Utah, United States of America, North America
View from Cadillac Mountain, Acadia National Park, Mount Desert Island, Maine, New England, United States of America, North America
Two girls with parasols in Burnt Forest, Yellowstone National Park, Wyoming, United States of America, North America
Vintage tour bus on the Sun Road, Glacier National Park, Montana, United States of America, North America
Watch Tower, Colorado River below, Desert View Point, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Bison (Bison bison) bull, Yellowstone National Park, Wyoming, United States of America, North America
Lake Helen and Mount Lassen, 3187 meters, in the background, Lassen Volcanic National Park, California, United States of America, North America
Half Dome at sunset, the mountain partially obscurred by smoke from the 2014 Dog Rock wildfire, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Star trails above Bryce Canyon National Park, Utah, United States of America, North America
Morning Glory Pool in Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
American Kestrel (Sparrow Hawk) (Falco sparverius), male, Yellowstone National Park, Wyoming, United States of America, North America
Mount Moran in the winter with snow, Grand Teton National Park, Wyoming, United States of America, North America
Greater sage-grouse (Centrocercus urophasianus) in the snow, Grand Teton National Park, Wyoming, United States of America, North America
Sunrise View Piont, Bryce National Park, Utah, United States of America, North America
The Fairweather Range as seen from Fern Harbour, Glacier Bay National Park, Southeast Alaska, United States of America
Hiking the Pa'rus trail, Zion National Park, Utah, United States of America, North America
Bryce Canyon, Bryce Canyon National Park, Utah, United States of America, North America
Delicate Arch, Arches National Park, Moab, Utah, United States of America, North America
Castle Geyser, Upper Geyser Basin, Yellowstone National Park, Wyoming, USA
Scotty's Castle, historic Spanish style castle in the north of the park, Death Valley National Park, California, United States of America (U.S.A.), North America
Emerald Pool, Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Elevated view of Doublet Pool, Firehole River and Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Moss-covered tree trunks in the rainforest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America
Man walking through Mesquite Sand Dunes at dawn, Death Valley National Park, California, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Lenticular clouds over Moose Pond, autumn, Grand Teton National Park, Wyoming, United States of America, North America
Bright colours and steam, Grand Prismatic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Second Beach, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America
Badlands at dawn, Badlands National Park, South Dakota, United States of America, North America
Half Dome from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Pueblo Bonito, kiva (foreground), UNESCO World Heritage Site, New Mexico, United States of America, North America
Tourist hiker, on top of Moro Rock overlooking the Sequoia foothills, looking towards Kings Canyon and the high mountains of the Sierra Nevada, Sequoia National Park, California, United States of America, North America
Mount Hayden at dusk from Point Imperial, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Tourists at Mather Point overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Female Williamson's sapsucker (Sphyrapicus thyroideus), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Columbian ground squirrel (Citellus columbianus) feeding, Glacier National Park, Montana, United States of America, North America
Purple wild flowers, Capitol Reef National Park, Utah, United States of America, North America
Yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris) with nesting material, Yellowstone National Park, Wyoming, United States of America, North America
Yellow pine chipmunk (Eutamias amoenus), Yellowstone National Park, Wyoming, United States of America, North America
Young bison (Bison bison), Yellowstone National Park, Wyoming, United States of America, North America
Western pasqueflower (Anemone occidentalis), Glacier National Park, Montana, United States of America, North America
Grizzly bear (Ursus arctos horribilis), Glacier National Park, Montana, United States of America, North America
Water reflections of the Teton Range, taken from the end of Schwabacker Road, Grand Teton 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
Young mule deer (Odocoileus hemionus) in a snow storm in the Spring, Yellowstone National Park, Wyoming, United States of America, North America
Black bear (Ursus americanus) sow and three cubs of the year, Yellowstone National Park, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis) in the snow in the spring, Yellowstone National Park, Wyoming, United States of America, North America
Tenaya Lake in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Pink clouds at dawn over sandstone formations covered with a dusting of snow, Zion National Park, Utah, United States of America, North America
Granite mountains reflected in Tenaya Lake, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Black Bear (Ursus americanus) cub of the year or spring cub, Yellowstone National Park, Wyoming, United States of America, North America
Aura Borealis (Northern lights) in Denali Wilderness National Park, Alaska, United States of America, North America
Yosemite Valley, with El Capitan and Bridal Veil Falls beneath a beautiful pink dawn sky, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Natural bridge, Bryce National Park, Utah, United States of America, North America
An adult mountain goat (Oreamnos americanus), at Gloomy Knob in Glacier Bay National Park, Southeast Alaska, United States of America, North America
Bryce Canyon, Bryce Canyon National Park, Utah, United States of America, North America
Black bear (Ursus americanus), outside Glacier National Park, Montana, United States of America, North America
Valley View with El Capitan, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
El Capitan, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Bryce Canyon National Park, Utah, United States of America, North America
Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Cascades through moss-covered boulders, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America
Pronghorn (Antilocapra americana) buck, Yellowstone National Park, Wyoming, United States of America, North America
Badger (Taxidea taxus), Yellowstone National Park, Wyoming, United States of America, North America
Male Audubon's Yellow-Rumped Warbler (Dendroica coronata auduboni), Yellowstone National Park, Wyoming, United States of America, North America
Mountain bluebird (Sialia currucoides) pair at their nest, Yellowstone National Park, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis) sow and two cubs of the year, Yellowstone National Park, Wyoming, United States of America, North America
The northern part of the Roosevelt National Park, North Dakota, United States of America, North America
Common raven (Corvus corax), Petrified Forest National Park, Arizona, United States of America, North America
Chaco Culture National Historic Park, World Heritage Site, Fajada Butte, UNESCO World Heritage Site, New Mexico, United States of America, North America
Hiker and tent illuminated under the night sky, Great Sand Dunes National Park, Colorado, United States of America, North America
Red leaves on a bigtooth maple (Acer grandidentatum) surround a Ponderosa pine trunk in the fall, Zion National Park, Utah, United States of America, North America
Riverside Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Bighorn sheep (Ovis canadensis) lamb, Yellowstone National Park, Wyoming, United States of America, North America
Grizzly bear (Ursus arctos horribilis) with its tongue out, Glacier National Park, Montana, United States of America, North America
Female mountain bluebird (Sialia currucoides) with a caterpillar, Yellowstone National Park, Wyoming, United States of America, North America
St. Mary Falls, Glacier National Park, Montana, United States of America, North America
American robin (Turdus migratorius), Glacier National Park, Montana, United States of America, North America
Black bear (Ursus americanus) sow and cub-of-the-year coming down from a tree, Yellowstone National Park, Wyoming, United States of America, North America
Black bear (Ursus americanus) sow and two cubs-of-the-year, one nursing and one coming down from a tree, Yellowstone National Park, Wyoming, United States of America, North America
Mule deer graze in Tuolumne Meadows near Lembert Dome, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Lassen Volcanic National Park, California, United States of America, North America
Black bear (Ursus americanus) in the spring, Yellowstone National Park, Wyoming, United States of America, North America
Unicorn Peak rising above a mist shrouded forest, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Trail lights and shops on Banff Avenue at dusk, Banff, Banff National Park, Alberta, Canada, North America