"Love Birds" by Charles Patrick Ewing is licensed under CC BY 2.0
"The Black Skimmer (Rynchops niger), the coolest bird in the world." by Terry Foote is licensed under CC BY-SA 2.0 .
"bird" by Mathias Appel is marked with CC0 1.0 .
"Giant Kingfisher, Megaceryle maxima at Rietvlei Nature Reserve, South Africa, #bird #picture" by Derek Keats is licensed under CC BY 2.0 .
"Funny birds 1 - Scratching duck" by Infomastern is licensed under CC BY-SA 2.0 .
"cardinal bird" by watts_photos is licensed under CC BY 2.0 .
"A bird - Flickr - Doug Scortegagna" by Douglas Scortegagna from Flores da Cunha, Brasil is licensed under CC BY 2.0 .
"Bird" by likeaduck is licensed under CC BY-SA 2.0 .
"Birds" by Phil Fiddyment is licensed under CC BY 2.0 .
"Birds of Paradise" by maxful is licensed under CC BY 2.0 .
"bird-4" by christopher.d.heald is licensed under CC BY-SA 2.0 .
"Black Bird" by Wildlife Boy1 is licensed under CC BY 2.0 .