Whooper swan. Hokkaido, Japan
Photograph by Stefano UnterthinerAfrican penguins, Mercury Island, Namibian Islands Marine Protected Area, Namibia.
Photograph by Thomas P Peschak, National Geographic CreativeBlack-browed albatrosses, Falkland Islands.
Photograph by Paul Nicklen, National Geographic CreativeRuppell's griffon vultures, Serengeti National Park, Tanzania, Africa.
Photograph by Charlie Hamilton James, National Geographic CreativeAnna's hummingbird shaking under simulated rain, University of California, Berkeley, United States.
Photograph by Anand Varma, National Geographic CreativeEmperor penguins take a dive, Ross Sea, Antarctica.
Photograph by Paul Nicklen, National Geographic CreativeNorthern flicker, Alaska, United States.
Photograph by Michael Quinton, National Geographic CreativeBald eagle walks on a frozen lake, Aleutian Islands, Alaska, United States.
Photograph by Klaus Nigge, National Geographic CreativeBlack grouse perform a mating ritual, Scotland.
Photograph by Jim Richardson, National Geographic CreativeOstriches, South Africa.
Photograph by Uli Kunz. National Geographic CreativeNorthern spotted owl, Redwood forest, California, United States.
Photograph by Michael Nichols, National Geographic CreativeFour ducklings huddle together, Falkland Islands.
Photograph by Cristina Mittermeier, National Geographic CreativeBlue-breasted bee-eaters, Uganda.
Photograph by Ronan Donovan, National Geographic CreativeSchalow's turaco, Choussy, France.
Photograph by Joël Sartore, National Geographic Photo ArkAtlantic Puffin, with a mouthful of fish, Iceland.
Photograph by Michael Melford, National Geographic CreativeIndian roller, Santa Barbara Zoo, California, United States.
Photograph by Joël Sartore, National Geographic Photo ArkCassowary, Queensland, Australia.
Photograph by Christian Ziegler, National Geographic CreativeGreater bird of paradise, Badigaki Forest, Wokam Island in the Aru Islands, Indonesia.
Photograph by Tim Lamán, National Geographic CreativeFlamingos, Ria Lagartos Bioshere Reserve, Yucatan, Mexico.
Photograph by Klaus Nigge, National Geographic CreativeGalapagos hawk, Isabela Island, Galapagos Islands.
Photograph by Thomas P Peschak, National Geographic CreativeRed knobbed hornbill, Tangkoko Reserve, Sulawesi Island, Indonesia.
Photograph by Tim Lamán, National Geographic CreativeEmperor penguin, Mario Zuchelli Base, Ross Sea, Antarctica.
Photograph by Paul Nicklen, National Geographic CreativeWhooping crane, poses in defence, Florida, United States.
Photograph by Klaus Nigge, National Geographic CreativeBrazilian hawk-headed parrot, Rare Species Conservatory Foundation, Florida, United States.
Photograph by Joël Sartore, National Geographic Photo ArkBelted kingfisher, Grand Teton National Park, Wyoming, United States.
Photograph by Charlie Hamilton James, National Geographic CreativePeacock, Henry Doorly Zoo, Omhaha, Nebraska, United States.
Photograph by Joël Sartore, National Geographic CreativeChinese ring-necked pheasant, Plzen Zoo, Czech Republic.
Photograph by Joël Sartore, National Geographic Photo ArkGentoo penguin with chick, Antarctica.
Photograph by Brian Skerry, National Geographic CreativeLilac-breasted roller, Okavango Delta, Botswana.
Photograph by Sérgio Pitamitz, National Geographic CreativeCurl-crested aracari, Dallas, Texas, United States.
Photograph by Joël Sartore, National Geographic Photo ArkSand hill cranes. Nebraska, United States.
Photograph by Randy Olson, National Geographic CreativeBlue crowned pigeon. Henry Doorly Zoo, Omaha, Nebraska, United States.
Photograph by Joël Sartore, National Geographic Creative