Bird Behavior

adapted adult Africa aggressive albatrosses alcids animals Arctic attract become behavior bill bird song bird's birds of prey bowerbird breeding brood burrows calls catch chaffinches chicks clutch colony colored cormorants courtship cuckoo defend diet display diving ducks eaters eggs emperor penguin energy European European robin feathers feeding feet female finches fish flight flightless flock flowers flycatchers food supply frigatebirds fruit gannets geese ground gulls habit hatching head herons hummingbirds hunting incubation insects kittiwakes male mallee fowl mammals mandible mate meters migration molt movements nectar nestlings nightjars North America oilbird ostrich owls oystercatcher pair parasites parents passerines penguins perch petrels pigeons plover plumage predators preen ratites rear roost seabirds season seeds shell shorebirds skuas soaring song South species spend starlings storks surface swallows swimming tail temperature terns territory trees tropical vultures warblers wings winter woodpecker finch woodpeckers young birds