Thick-billed Murre
Natural History Museum, London/science Photo Library
Trumpter Swan
Natural History Museum, London/science Photo Library
Female And Male Mandarin Ducks
John Devries/science Photo Library
Lilac-breasted Roller
Tony Camacho
Tundra Swan
Natural History Museum, London/science Photo Library
American Widgeon
Natural History Museum, London/science Photo Library
Kingfisher Feathers
John Devries/science Photo Library
Estrildid Finches #3
Natural History Museum, London/science Photo Library
Common Kestrel On A Branch #1
John Devries/science Photo Library
Kingfisher Wing Feathers
John Devries/science Photo Library
Birds-of-paradise
Natural History Museum, London/science Photo Library
Scarlet Macaw Plumage #1
Tony Camacho
Gabar Goshawk With Melanistic Plumage
Tony Camacho
Group Of Turnstones In Winter Plumage
Bob Gibbons/science Photo Library
Indian Pond Heron In Breeding Plumage
K Jayaram/science Photo Library
Male Cape Weaver In Breeding Plumage
Bob Gibbons
Eurasian Spoonbill Breeding Plumage
K Jayaram
Male Wood Duck In Eclipse Plumage
Bob Gibbons
Male Goldeneye Duck In Breeding Plumage
Brian Gadsby/science Photo Library
Shag Plumage
Simon Fraser/science Photo Library
Emperor Penguin Wing And Plumage
Dr P. Marazzi/science Photo Library
Male Ruff In Breeding Plumage
Brian Gadsby/science Photo Library
Male Ruff In Breeding Plumage #1
Brian Gadsby/science Photo Library
Black-headed Gull In Winter Plumage
Bob Gibbons/science Photo Library
Squacco Heron In Breeding Plumage
Bob Gibbons/science Photo Library
Male Eurasian Bullfinch
Colin Varndell
Tawny Fish Owl
Natural History Museum, London/science Photo Library
Male Pheasant #1
John Devries/science Photo Library
Two White-throated Sparrows
Natural History Museum, London/science Photo Library
Wood Ducks
John Devries/science Photo Library
Cedar Waxwings
Natural History Museum, London/science Photo Library
Great Grey Owl Head
Paul Williams/science Photo Library
Great Argus
Collection Abecasis/science Photo Library
Darwin On Sexual Selection In Birds #2
Library Of Congress, Rare Book And Special Collections Division/science Photo Library
African Fish Eagle In Flight
Steve Allen/science Photo Library
Hoopoe With An Insect In Its Beak
John Devries/science Photo Library
Jay
John Devries/science Photo Library
Snowy Owls
Natural History Museum, London/science Photo Library
Red Knots
Duncan Shaw/science Photo Library
Estrildid Finches
Natural History Museum, London/science Photo Library
Flamingo
Wladimir Bulgar/science Photo Library
Common Moorhen
Natural History Museum, London/science Photo Library
Black-headed Gull Drinking
Duncan Shaw/science Photo Library
Male Pheasant
John Devries/science Photo Library
Estrildid Finches #2
Natural History Museum, London/science Photo Library
Marabou Stork Flapping Its Wings
Peter Chadwick/science Photo Library
Bee-eaters
John Devries/science Photo Library
European Robin
Andy Davies/science Photo Library
Male Madagascar Paradise Flycatcher #1
Tony Camacho/science Photo Library
Gyrfalcon Pair
Natural History Museum, London/science Photo Library
Male Pheasant #2
John Devries/science Photo Library
Bird Feather
Gustoimages/science Photo Library
White-booted Racket-tail Hummingbird #1
Nicolas Reusens/science Photo Library
European Scops Owl (otus Scops)
Photostock-israel
European Greenfinch Carduelis Chloris #1
Photostock-israel
European Goldfinch
Colin Varndell
Bateleur Eagle In Flight
Tony Camacho
White-throated Toucan
Tony Camacho/science Photo Library
White-throated Toucan #1
Tony Camacho/science Photo Library
Purple-crested Turaco
Tony Camacho
Mandarin Duck
Bildagentur-online/mcphoto-schulz
Purple-crested Turaco #1
Tony Camacho
Yellow-billed Stork With Wings Spread
Tony Camacho/science Photo Library
Little Bee-eater #1
Tony Camacho/science Photo Library
Lilac-breasted Roller
Tony Camacho/science Photo Library
Adult Bateleur Eagle Taking Off
Tony Camacho/science Photo Library
Lilac-breasted Roller #2
Tony Camacho/science Photo Library
Lilac-breasted Roller #3
Tony Camacho/science Photo Library
Lilac-breasted Roller With Insect
Tony Camacho/science Photo Library
Lilac-breasted Roller In Flight
Tony Camacho
Booted Racket-tail Hummingbird
Tony Camacho/science Photo Library
Common Kestrel
Andy Davies/science Photo Library