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An adult black vulture (Coragyps atratus), perched in a tree on Barro Colorado Island, Panama, Central America
Yellow aspen and conifers, Colorado, United States of America (U.S.A.), North America
Aspens in fall colors with mountains and evergreens, near Silver Jack, Uncompahgre National Forest, Colorado, United States of America, North America
Mountain stream through Palmeto Gulch with golden aster (Chrysopsis villosa), Gunnison National Forest, Colorado, United States of America, North America
Spruce Tree House Ruins, Pueblo ruins in Mesa Verde containing some of the most elaborte Pueblo dwellings found today, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Young yellowbelly marmot (Marmota flaviventris) grooming, Uncompahgre National Forest, Colorado, United States of America, North America
Maroon Bells with fall color, White River National Forest, Colorado, United States of America, North America
An adult golden-mantled ground squirrel (Callospermophilus lateralis) feeding in Rocky Mountain National Park, Colorado, United States of America, North America
Sally lightfoot crab (Grapsus grapsus), moulted exoskeleton at Punta Colorado, Baja California Sur, Mexico, North America
Maroon Bells reflected in Maroon Lake with fall color, White River National Forest, Colorado, United States of America, North America
Llamas at Laguna Colorado (Red Lake), Eduardo Avaroa Andean National Reserve, Bolivia, South America
Uinta Chipmunk (Tamias umbrinus), Uncompahgre National Forest, Colorado, United States of America, North America
Floating in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Riverside Walk, Temple of Sinawava, Zion National Park, Colorado Plateau, Utah, United States of America, North America
Rock formation known as Swirls, on Colorado Plateau, Arizona, United States of America (U.S.A.), North America
Bullion King Lake at dawn, Porphyry Basin, San Juan National Forest, Colorado, United States of America, North America
Fall sunset near Owl Creek Pass, Uncompahgre National Forest, Colorado, United States of America, North America
Coyote (Canis latrans) feeding on an elk carcass in Rocky Mountain National Park, Colorado, United States of America, North America
American Avocet (Recurvirostra americana), Belmar Historic Park, Lakewood, Colorado, United States of America, North America
Lane through fall aspens, Ophir Pass, Uncompahgre National Forest, Colorado, United States of America, North America
Maroon Bells reflected in Maroon Lake with fall color, White River National Forest, Colorado, United States of America, North America
Lost Lake at dawn in the fall, Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America
Golden-mantled squirrel (Citellus lateralis), Routt National Forest, Colorado, United States of America, North America
Adult Sally Lightfoot crab (Grapsus grapsus) at low tide on Punta Colorado, Isla San Jose, Baja California Sur, Mexico, North America
Orange aspens in the fall among evergreens covered with snow at a lake, Grand Mesa National Forest, Colorado, United States of America, North America
Gorges of Colorado River, Dead Horse Point State Park, Moab, Utah, United States of America, North America
Horseshoe Bend on the Colorado River, Page, Arizona, United States of America, North America
Rafters on the Colorado River through the Grand Canyon, Arizona, United States of America, North America
Old cliff dwellings and cliff palace in the Mesa Verde National Park, Colorado, USA *** Local Caption ***
Aspen Mountain and old building, Aspen, Colorado, USA
Sneffels Range with fall colors, near Ouray, Colorado, United States of America, North America
Aspens in fall colors with mountains, near Silver Jack, Uncompahgre National Forest, Colorado, United States of America, North America
Captive short-eared owl (Asio flammeus) in the snow, Boulder County, Colorado, United States of America, North America
Male wood duck (Aix sponsa) swimming, Belmar Historic Park, Lakewood, Colorado, United States of America, North America
Juvenile American robin (Turdus migratorius), Gunnison County, Colorado, United States of America, North America
Field of showy daisy (Erigeron speciosus), Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America
Coyote (Canis latrans) feeding on an elk carcass in Rocky Mountain National Park, Colorado, United States of America, North America
Bull elk (Cervus canadensis) fighting in rut in Rocky Mountain National Park, Colorado, United States of America, North America
Yellow and orange aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Cow moose (Alces alces), Roosevelt National Forest, Colorado, United States of America, North America
Cliff palace, Colorado River Goose Neck, Dead Horse Point State Park, Utah, USA, North America
The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Mount Sneffels at sunrise in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Orange aspens in the fall with snow at a lake, Grand Mesa National Forest, Colorado, United States of America, North America
An adult common chuckwalla (Sauromalus ater), at Punta Colorado, Isla San Jose, Baja California Sur, Mexico, North America
Panorama of the Colorado River just north of Lee's Ferry in the Glen Canyon Recreation Area, Arizona, United States of America, North America
Virgin River und Angel's Landing, Zion National Park, Colorado Plateau, Utah, United States of America, North America
Colorado River flowing through Marble Canyon, viewed above Cathedral Wash, adjacent to the Glen Canyon Recreation Area, Arizona, United States of America, North America
Navajo Bridges as seen from the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Autumn coloured trees near Aspen Cemetery. Aspen, Colorado, USA
An adult black spiny-tailed iguana (Ctenosaura similis), on the ground on Barro Colorado Island, Panama, Central America
An adult black vulture (Coragyps atratus), perched in a tree on Barro Colorado Island, Panama, Central America
Cow parsnip (Heracleum lanatum) and Alpine sunflower (Hymenoxys grandiflora) with Crested Butte in the distance, Washington Gulch, Gunnison National Forest, Colorado, United States of America, North America
Paradise Divide, Grand Mesa-Uncompahgre-Gunnison National Forest, Colorado, United States of America, North America
Aspen grove in early fall, White River National Forest, Colorado, United States of America, North America
Common snipe (Gallinago gallinago), Arapaho National Wildlife Refuge, Colorado, United States of America, North America
Fish Creek Falls and cascades, Routt National Forest, Colorado, United States of America, North America
Aspen trunks in the fall, White River National Forest, Colorado, United States of America, North America
Lane through fall aspens, Ophir Pass, Uncompahgre National Forest, Colorado, United States of America, North America
Colorado River, Canyonlands National Park, Utah, United States of America, North America
West Rim, Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America
West Rim, Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America
Detail of waterfall on Sneffels Creek, Yankee Boy Basin, Uncompahgre National Forest, Colorado, United States of America, North America
An adult black spiny-tailed iguana (Ctenosaura similis), on the ground on Barro Colorado Island, Panama, Central America
An adult black spiny-tailed iguana (Ctenosaura similis), on the ground on Barro Colorado Island, Panama, Central America
Dallas divide between Placerville and Ridgway in the autumn, Colorado, USA, North America
Yellowbelly marmot (Marmota flaviventris) near Cinnamon Pass, Uncompahgre National Forest, Colorado, United States of America, North America
Mountain goat (Oreamnos americanus), Mount Evans, Colorado, United States of America, North America
The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Yellow aspens and an evergreen in the fall, San Juan National Forest, Colorado, United States of America, North America
American pipit (Anthus rubescens), San Juan National Forest, Colorado, United States of America, North America
Sky Walk over the Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America
West Rim, Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America
Shooting the rapids in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
An adult brown pelican (Pelecanus occidentalis) in flight at Punta Colorado, Isla San Jose, Baja California Sur, Mexico, North America
Fall colors of aspens with evergreens, near Ouray, Colorado, Uninted States of America, North America
The Vermilion Cliffs adjacent to Glen Canyon Recreation Area viewed from the plateau at the end of Spencer Trail in Marble Canyon with Lee's Ferry on the lower left with the Colorado River, Arizona, United States of America, North America
Cathedral Rock with snow, Garden Of The Gods, Colorado Springs, Colorado, United States of America, North America
An adult golden-mantled ground squirrel (Callospermophilus lateralis), Rocky Mountain National Park, Colorado, United States of America, North America
The Colorado River from its south shoreline near Phantom Ranch at Grand Canyon Arizona.
Yellow aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Yellow and orange hillside of aspen in the fall, Uncompahgre National Forest, Colorado, United States of America, North America
Dead Horse Point State Park, view from point down into Colorado River canyon, Moab, Utah, United States of America, North America
Marble Canyon along the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
View of the Colorado River from the Glen Canyon Dam Bridge on Highway 89, Arizona, United States of America, North America
The confluence of Badger Canyon and the Colorado River in Marble Canyon, Arizona, United States of America, North America
Spruce tree house, one of the cliff dwellings in the Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Lake San Cristobal, Silver Thread Scenic Byway, Colorado, United States of America (U.S.A.), North America
Horseshoe Bend, Colorado River, Utah, United States of America (U.S.A.), North America
Sneffels Range with fall colors, near Ouray, Colorado, United States of America, North America
Fall colors of aspens with evergreens, near Ouray, Colorado, Uninted States of America, North America
White-tailed ptarmigan (Lagopus leucurus) hen among wildflowers, Uncompahgre National Forest, Colorado, United States of America, North America
Pica (Pica pica), Clear Lake, San Juan National Forest, Colorado, United States of America, North America
Green-Naped Lorikeet (Trichoglossus haematodus haematodus) in captivity, Denver Zoo, Denver, Colorado, United States of America, North America
The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
Beaver (Castor canadensis) swimming, Colorado State Forest State Park, Colorado, United States of America, North America
View over the Colorado River from the Slickrock trail, Moab, Utah, United States of America, North America
Yellow aspen leaves against a blue sky in the fall, Grand Mesa National Forest, Colorado, United States of America, North America
Sky Walk over the Grand Canyon and Colorado River, UNESCO World Heritage Site, Arizona, United States of America, North America
Ancestral Puebloan ruin at Desert View on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America