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Hoary marmot (Marmota caligata), Glacier National Park, Montana, United States of America, North America
Great egret (Ardea alba) in breeding plumage, Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America
Snow covered bison (Bison biso), on the river bank, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
A Mexican jay (Aphelocoma wollweberi), in a tree in the Chiricahua National Monument, Arizona, United States of America, North America
An juvenile acorn woodpecker (Melanerpes formicivorous), Madera Canyon, southern Arizona, Arizona, United States of America, North America
Captive black bear (Ursus americanus), Alaska Wildlife Conservation Center, Girlwood, Alaska, United States of America, North America
Adult male plateau fence lizard (Sceloporus tristichus), north rim of Grand Canyon National Park, Arizona, United States of America, North America
An adult desert collared lizard (Crotaphytus bicinctores), basking in Grand Canyon National Park, Arizona, United States of America, North America
Juvenile American robin (Turdus migratorius), Gunnison County, Colorado, United States of America, North America
Pica (Pica pica), Shoshone National Forest, Wyoming, United States of America, North America
Two Richardson Ground Squirrel (Citellus richardsoni), Grand Teton National Park, Wyoming, United States of America, North America
A young red-tailed hawk (Buteo jamaicensis), on a sign near Whitewater Draw, Coronado National Forest, Arizona, United States of America, North America
Adult California kingsnake (Lampropeltis californiae), Thong Chul, Tucson, Arizona, Arizona, United States of America, North America
American red squirrel (Tamiasciurus hudsonicus) on tree, Tolsona, Alaska, United States of America, North America
An adult common side-blotched lizard (Uta stansburiana), on the rocks in Grand Canyon National Park, Arizona, United States of America, North America
A wild burro near the Mosaic Canyon Trail in Death Valley National Park, California, United States of America, North America
Black bear (Ursus americanus) drying off, in captivity, Sandstone, Minnesota, United States of America, North America
Mountain lion (cougar) (Felis concolor), in captivity Sandstone, Minnesota, United States of America, North America
Bull elk (Cervus canadensis) bugling, Rocky Mountain National Park, Colorado, United States of America, North America
Curve-billed Thrasher (Toxostoma curvirostre), Caballo Lake State Park, New Mexico, United States of America, North America
White-Tailed Ptarmigan (Lagopus leucurus) in mixed plumage, Mount Evans, Colorado, United States of America, North America
Bison (Bison bison) in snow, Yellowstone National Park, Wyoming, United States of America, North America
Great egret (Ardea alba) flipping prey in its beak, San Jacinto Wildlife Area, California, United States of America, North America
Burrowing owl (Athene cunicularia), Salton Sea, California, United States of America, North America
An adult bridled titmouse (Baeolophus wollweberi), Madera Canyon, southern Arizona, Arizona, United States of America, North America
An adult desert collared lizard (Crotaphytus bicinctores), basking in Grand Canyon National Park, Arizona, United States of America, North America
Colorado chipmunk (Eutamias quadrivittatus), Rocky Mountain National Park, Colorado, United States of America, North America
Male Elk in snow, Montana, United States of America, North America
Grizzly bear (Ursus horribilis), Glacier National Park, Montana, United States of America, North America
Sandhill crane migration, Platte River, Nebraska, United States of America, North America
Brown pelican (Pelecanus occidentalis) in front of the Sunshine Skyway Bridge at Tampa Bay, Florida, United States of America, North America
Coastal brown bear, Ursus arctos, Lake Clark National Park, Alaska, United States of America, North America
Bald eagle (Haliaeetus leucocephalus) vocalizing, Boulder County, Colorado, United States of America, North America
Porcupine (Erethizon dorsatum) in captitvity, mother and young face to face, Sandstone, Minnesota, United States of America, North America
Canadian lynx (Lynx canadensis) in captivity, Sandstone, Minnesota, United States of America, North America
Grizzly bear (Ursus Arctos), Brooks Falls, Katmai National Park, Alaska, United States of America, North America
Lizard, White Sands, New Mexico, United States of America, North America
Pelican flying over sea, Key West, Florida, United States of America, North America
Great egrets (Casmerodius albus), great blue heron (Ardea herodias) and roseate spoonbills (Ajaia ajaja), looking for fish in pond, Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Anhinga snakebird darter, Anhinga anhinga, in the Everglades, Florida, United States of America
Laughing Gulls shoreline and beach at Anna Maria Island, Florida, USA
Royal terns and Laughing Gulls shoreline and beach at Anna Maria Island, Florida, USA
Alligator by Turner River, Everglades, Florida, USAAlligator in Turner River, Everglades, Florida, United States of America
Alligator in The Everglades, Florida, United States of America
Typical Everglades scene Great Blue Heron, Alligator, Black vultures in a pond in The Everglades, Florida, USA
Alligator in river water, Everglades, Florida, United States of America
Alligator drifting along Turner River, Everglades, Florida, USA
Great Blue Heron in flight, Everglades, Florida, United States of America
Alligator drifting along Turner River, Everglades, Florida, USA
Alligator, and its reflection as a mirror image, in Turner River, Everglades, Florida, United States of America
Alligator in Turner River, Everglades, Florida, United States of America
Typical Everglades Scene Alligator and Great Blue Heron in glade in The Everglades Florida, USA
Geese flying over Washington DC, USA. Wild birds are at risk if avian flu bird flu virus spreads.
Great horned owl (Bubo virginianus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Mojave rattlesnake (Mohave Rattlesnake) (Mojave Diamond Rattlesnake) (Desert Diamond Back) (Crotalus scutulatus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Hypomelanistic Western diamond-back rattlesnake (Western diamondback rattlesnake) (Crotalus atrox) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Alligator by Turner River, Everglades, Florida, USA
Great horned owl (Bubo virginianus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Bobcat (Lynx rufus) with its tongue out, Living Desert Zoo And Gardens State Park, New Mexico, United States of America, North America
Alligator The Everglades, Florida, United States of America
Alligator in Turner River, Everglades, Florida, United States of America
Yellow-crowned Night Heron (Nyctanassa violacea) standing in water, Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Royal tern, left, Laughing Gulls right shoreline and beach at Anna Maria Island, Florida, USA
Lesser Snow Geese (Chen C. caerulescens), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America
Road warning sign, J. N. Ding Darling Wildlife Refuge, Sanibel Island, Florida, United States of America, North America
Alligator in The Everglades, Florida, USA
Great White Egret, Ardea alba, also known as the Great Egret or Common Egret in the Everglades, Florida, USA
Two bighorn sheep (Ovis canadensis) rams butting heads during the rut, Clear Creek County, Colorado, United States of America, North America
Shorebirds at Anna Maria Island, Florida, United States of America
Great Blue Heron, Ardea herodias, on riverbank in the Everglades, Florida, USA
Anhinga snakebird darter, Anhinga anhinga, in the Everglades, Florida, United States of America
Great Blue Heron, Ardea herodias, in the Everglades, Florida, USA
Alligator and Great White Egret at Big Cypress Bend, Fakahatchee Strand in the Everglades, Florida, USA
Desert Cottontail (Sylvilagus auduboni), Wind Cave National Park, South Dakota, United States of America, North America
Speckled rattlesnake (Crotalus mitchellii) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Mountain lion (cougar) (puma) (Puma concolor) yawning, Living Desert Zoo And Gardens State Park, New Mexico, United States of America, North America
Wood Stork (Mycteria Americana) spreading wings and Roseate Spoonbills (Ajaia ajaja), Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Double-crested Cormorants and Brown Pelicans floating in the Gulf of Mexico by Anna Maria Island, Florida, USA
Lesser Snow Geese (Chen C. caerulescens), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America
Anhinga snakebird darter, Anhinga anhinga, air drying feathers in the Everglades, Florida, United States of America
Great Blue Heron, Ardea herodias, river scene in the Everglades, Florida, USA
Tricolored herons (Egretta tricolor) standing in water, Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Great egrets (Casmerodius albus) and roseate spoonbills (Ajaia ajaja) looking for fish in pond, Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Great Egret, Ardea alba, also known as the Great White Egret or Common Egret on Anna Maria, Island, Florida, USA
Speckled rattlesnake (Crotalus mitchellii) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America
Adult killer whales (Orcinus orca) near research boat in the Monterey Bay National Marine Sanctuary, California, United States of America, North America
Brown Pelican (Pelecanus occidentalis) in flight, Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Red fox (Vulpes fulva) kit, Sandstone, Minnesota, United States of America, North America
Alligator by Turner River, Everglades, Florida, USA
Red-bellied woodpecker, South Florida, United States of America, North America
Captive baby river otter (Lutra canadensis), Sandstone, Minnesota, United States of America, North America
Gray wolf (Canis lupus) in captivity, Sandstone, Minnesota, United States of America, North America
Alaskan brown bear (grizzly), grazing on tundra berries, Denali National Park, Alaska, United States of America, North America
Roseate spoonbill (Ajaia ajaja) in flight, Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America
Great White Egret, Ardea alba, also known as the Great Egret or Common Egret in the Everglades, Florida, USA
Brown thrasher, South Florida, United States of America, North America
Yellow-footed Snowy Egret, Egretta Thula, in glade in the Florida Everglades, United States of America
Sea lions, Pier 39, San Francisco, California, United States of America, North America
Great horned owl (Bubo virginianus), Whitewater Draw Wildlife Area, Arizona, United States of America, North America
Western screech-owl (Megascops kennicottii) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America