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

Green-backed heron (striated heron) (Butorides striatus), immature, Ngorongoro Crater, Tanzania, East Africa, Africa

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

Beautiful sunbird (Cinnyris pulchella), male, Ngorongoro Conservation Area, Serengeti, Tanzania, East Africa, Africa

Grey crowned crane (Southern crowned crane) (Balearica regulorum), Ngorongoro Crater, Tanzania, East Africa, Africa

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

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

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

Lesser masked weaver (Ploceus intermedius), Ngorongoro Crater, Tanzania, East Africa, Africa

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

Abdim's stork (Ciconia abdimii), Ngorongoro Crater, Tanzania, East Africa, Africa

Juvenile golden eagle (Aquila chrysaetos) in flight over snow in the winter, Yellowstone National Park, Wyoming, 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

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

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

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

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

Kori bustard (Ardeotis kori), Ngorongoro Crater, Tanzania, East Africa, Africa