Whooper swan. Hokkaido, Japan
Photograph by Stefano Unterthiner
African penguins, Mercury Island, Namibian Islands Marine Protected Area, Namibia.
Photograph by Thomas P Peschak, National Geographic Creative
Black-browed albatrosses, Falkland Islands.
Photograph by Paul Nicklen, National Geographic Creative
Ruppell's griffon vultures, Serengeti National Park, Tanzania, Africa.
Photograph by Charlie Hamilton James, National Geographic Creative
Anna's hummingbird shaking under simulated rain, University of California, Berkeley, United States.
Photograph by Anand Varma, National Geographic Creative
Emperor penguins take a dive, Ross Sea, Antarctica.
Photograph by Paul Nicklen, National Geographic Creative
Northern flicker, Alaska, United States.
Photograph by Michael Quinton, National Geographic Creative
Bald eagle walks on a frozen lake, Aleutian Islands, Alaska, United States.
Photograph by Klaus Nigge, National Geographic Creative
Black grouse perform a mating ritual, Scotland.
Photograph by Jim Richardson, National Geographic Creative
Ostriches, South Africa.
Photograph by Uli Kunz. National Geographic Creative
Northern spotted owl, Redwood forest, California, United States.
Photograph by Michael Nichols, National Geographic Creative
Four ducklings huddle together, Falkland Islands.
Photograph by Cristina Mittermeier, National Geographic Creative
Blue-breasted bee-eaters, Uganda.
Photograph by Ronan Donovan, National Geographic Creative
Schalow's turaco, Choussy, France.
Photograph by Joël Sartore, National Geographic Photo Ark
Atlantic Puffin, with a mouthful of fish, Iceland.
Photograph by Michael Melford, National Geographic Creative
Indian roller, Santa Barbara Zoo, California, United States.
Photograph by Joël Sartore, National Geographic Photo Ark
Cassowary, Queensland, Australia.
Photograph by Christian Ziegler, National Geographic Creative
Greater bird of paradise, Badigaki Forest, Wokam Island in the Aru Islands, Indonesia.
Photograph by Tim Lamán, National Geographic Creative
Flamingos, Ria Lagartos Bioshere Reserve, Yucatan, Mexico.
Photograph by Klaus Nigge, National Geographic Creative
Galapagos hawk, Isabela Island, Galapagos Islands.
Photograph by Thomas P Peschak, National Geographic Creative
Red knobbed hornbill, Tangkoko Reserve, Sulawesi Island, Indonesia.
Photograph by Tim Lamán, National Geographic Creative
Emperor penguin, Mario Zuchelli Base, Ross Sea, Antarctica.
Photograph by Paul Nicklen, National Geographic Creative
Whooping crane, poses in defence, Florida, United States.
Photograph by Klaus Nigge, National Geographic Creative
Brazilian hawk-headed parrot, Rare Species Conservatory Foundation, Florida, United States.
Photograph by Joël Sartore, National Geographic Photo Ark
Belted kingfisher, Grand Teton National Park, Wyoming, United States.
Photograph by Charlie Hamilton James, National Geographic Creative
Peacock, Henry Doorly Zoo, Omhaha, Nebraska, United States.
Photograph by Joël Sartore, National Geographic Creative
Chinese ring-necked pheasant, Plzen Zoo, Czech Republic.
Photograph by Joël Sartore, National Geographic Photo Ark
Gentoo penguin with chick, Antarctica.
Photograph by Brian Skerry, National Geographic Creative
Lilac-breasted roller, Okavango Delta, Botswana.
Photograph by Sérgio Pitamitz, National Geographic Creative
Curl-crested aracari, Dallas, Texas, United States.
Photograph by Joël Sartore, National Geographic Photo Ark
Sand hill cranes. Nebraska, United States.
Photograph by Randy Olson, National Geographic Creative
Blue crowned pigeon. Henry Doorly Zoo, Omaha, Nebraska, United States.
Photograph by Joël Sartore, National Geographic Creative
