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Great Egrets (Casmerodius albus) in a pond looking for fish, Sanibel Island, J. N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Greater sandhill cranes (Grus canadensis tabida) gray in color, and lesser snow geese (Chen caerulescens caerulescens) white in color, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Lesser snow geese (Chen caerulescens caerulescens), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Greater sandhill cranes (Grus canadensis tabida) grey color, and lesser snow geese (Chen caerulescens caerulescens) white color, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Lesser snow geese (Chen caerulescens caerulescens) in flight, and greater sandhill cranes (Grus canadensis tabida) standing in water, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Greater sandhill cranes (Grus canadensis tabida) in foreground, and lesser snow geese (Chen caerulescens caerulescens) in background, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Lesser snow geese (Chen caerulescens caerulescens) at sunrise, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Bobcat (Lynx rufus), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Taro fields in Hanalei National Wildlife Refuge, Hanalei Valley, Kauai, Hawaii, United States of America, Pacific

Red-tailed tropicbird (Phaethon rubricauda), Kilauea Point National Wildlife Refuge, Kauai, Hawaii, United States of America, Pacific

Line of four Sandhill crane (Grus canadensis) in a pond silhouetted at sunset, Bosque Del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Flock of snow goose (Chen caerulescens) blasting off, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Great white egret (Ardea alba) catching fish, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Northern pintail (Anas acuta) drake, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Lesser snow geese (Chen caerulescens caerulescens) in flight at sunrise, greater sandhill cranes (Grus canadensis tabida) in water, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Greater sandhill cranes (Grus canadensis tabida) gray in color, and lesser snow geese (Chen caerulescens caerulescens) white in color, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Greater sandhill cranes (Grus canadensis tabida) at sunrise, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Wild mustang (banker horse) (Equus ferus caballus) in Currituck National Wildlife Refuge, Corolla, Outer Banks, North Carolina, United States of America, North America

Wild mustangs (banker horses) (Equus ferus caballus) in Currituck National Wildlife Refuge, Corolla, Outer Banks, North Carolina, United States of America, North America

Lesser snow geese (Chen caerulescens caerulescens), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Hawaiian goose (nene) (Branta sandvicensis), at Historic Kilauea Lighthouse, Kilauea Point National Wildlife Refuge, Kauai, Hawaii, United States of America, Pacific

Two sandhill crane (Grus canadensis) in flight, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Greater sandhill crane (Grus canadensis tabida), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Greater sandhill crane (Grus canadensis tabida), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Roseate Spoonbill (Platalea ajaja) in flight, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Wild mustangs (banker horses) (Equus ferus caballus) in Currituck National Wildlife Refuge, Corolla, Outer Banks, North Carolina, United States of America, North America

Great blue heron (Ardea herodias) looking for food, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Greater sandhill cranes (Grus canadensis tabida) at sunset, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Great white egret (Ardea alba) in flight, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

American coot (Fulica americana) swimming, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Raccoon (Procyon lotor) scratching himself, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Wild mustangs (banker horses) (Equus ferus caballus) in Currituck National Wildlife Refuge, Corolla, Outer Banks, North Carolina, United States of America, North America

Sandhill crane (Grus canadensis) landing, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Sandhill crane (Grus canadensis), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Three sandhill cranes (Grus canadensis) landing with pink clouds, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Sandhill crane (Grus canadensis) landing, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

White-Crowned Sparrow (Zonotrichia leucophrys), Pahranagat National Wildlife Refuge, Nevada, United States of America, North America

Least sandpiper (Calidris minutilla) wading while feeding, Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America

Group of Great white egrets (Ardea alba) looking for food in a pond, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Group of Great white egrets (Ardea alba) looking for food in a pond, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Historic Kilauea Lighthouse on Kilauea Point National Wildlife Refuge, Kauai, Hawaii, United States of America, Pacific

Coyote (Canis latrans) with a NorthernpPintail (Anas acuta) in its mouth, Bosque Del Apache National Wildlife Refuge, New Mexico, United States of America, North America

American alligator (Alligator mississipiensis), Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Taro fields in Hanalei National Wildlife Refuge, Hanalei Valley, Kauai, Hawaii, United States of America, Pacific

Sandhill crane (Grus canadensis) landing with pink clouds, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Bosque de Apache National Wildlife Refuge, Socorro, New Mexico, United States of America, North America

Taro fields in Hanalei National Wildlife Refuge, Hanalei Valley, Kauai, Hawaii, United States of America, Pacific

Common snipe (Gallinago gallinago), Arapaho National Wildlife Refuge, Colorado, United States of America, North America

Taro fields in Hanalei National Wildlife Refuge, Hanalei Valley, Kauai, Hawaii, United States of America, Pacific

Bull elk (Cervus canadensis) in the snow, National Elk Refuge, Jackson, Wyoming, United States of America, North America

Two Sandhill Cranes (Grus canadensis) in flight in early morning light, Bosque Del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Snow forms, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Historic Kilauea Lighthouse on Kilauea Point National Wildlife Refuge, Kauai, Hawaii, United States of America, Pacific

Bare tree reflected in a floodplain, Bosque del Apache, National Wildlife Refuge, New Mexico, United States of America, North America

Snow goose (Chen caerulescens) flock at dawn after a blast off, Bosque Del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Juvenile double-crested cormorant (Phalacrocorax auritus) spreading its wings to dry, Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America

Grizzly bear (Ursus arctos horribilis) (Coastal brown bear), Kenai National Wildlife Refuge, Alaska, United States of America, North America

African forest elephant (Loxodonta cyclotis), Dzanga Bai, Dzanga Sangha National Park, UNESCO, Central African Republic

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

Adult brown bear (Ursus arctos) scratching its back on tree, Brooks River, Katmai National Park near Bristol Bay, Alaska, United States of America

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

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

Mule deer (Odocoileus hemionus) buck, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

American kestrel (sparrow hawk) (Falco sparverius) female, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

American kestrel (sparrow hawk) (Falco sparverius) female, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Black-necked stilt (Himantopus mexicanus) wading while feeding, Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America

Northern (Steller) sea lions, (Eumetopias jubatus), hauled out on South Marble Island, Glacier Bay National Park, Alaska, United States of America

Gadwall (Anas strepera) male standing on a frozen pond in the winter, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

View from Park Service platform where adult brown bears (Ursus arctos) forage for salmon, Katmai National Park, Alaska, United States of America

American kestrel (sparrow hawk) (Falco sparverius) female, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Bare tree reflected in the water of a floodplain, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Juvenile red-tailed hawk (Buteo jamaicensis) in flight, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

American kestrel (sparrow hawk) (Falco sparverius), male, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Northern shoveler (Anas clypeata) male landing on a frozen pond in the winter, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Roseate spoonbill (Ajaia ajaja), J. N. "Ding" Darling National Wildlife Refuge, Florida, United States of America, North America

Whitetail prairie dog (Cynomys luscurus), Arapaho National Wildlife Refuge, Colorado, United States of America, North America

American coot (Fulica americana) walking on ice, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Striped skunk (Mephitis mephitis), Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Sandhill crane (Grus Canadensis) in flight parachuting on approach to landing, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Group of Great white egrets (Ardea alba) looking for food in a pond, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Wood Stork (Mycteria Americana) in flight, Sanibel Island, J.N. Ding Darling National Wildlife Refuge, Florida, United States of America, North America

Sandhill crane (Grus canadensis) in flight, Bosque Del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Chesapeake Bay saltmarsh and winding creeks of the Plumtree National Wildlife Refuge, Hampton, Virginia, 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

Snow goose (Chen caerulescens) landing, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Northern pintail (Anas acuta) male swimming, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Snow goose (Chen caerulescens) in flight, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Snow goose (Chen caerulescens) flock in flight, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Black-necked stilt (Himantopus mexicanus), Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America

Gambel's quail (Callipepla gambelii), male, Bosque del Apache National Wildlife Refuge, New Mexico, 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

Snow goose (Chen caerulescens) flock in flight, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Two sandhill crane (Grus Canadensis) in the snow, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

American White Pelican (Pelecanus erythrorhynchos) in flight shortly after taking off, Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America

Snow goose (Chen caerulescens) swimming, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

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