The BirdsTraces the evolution of birds and discusses the varied sizes, shapes, colors, and habits of some representatives of the over 9,000 species existing today. |
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albatross Archaeopteryx Arctic arctic tern baby barbs beak BELLBIRD bill Bird Migration bird watchers bird's birds of prey black-headed gull body bones breeding build called chicken chicks color cranes creatures cuckoo developed diet ducks eagle eggs European robin example extinct eyes falcon feathers feeding feet female fish flight flocks forests geese glide grebes ground grouse hatched hawk herons hummingbird hunt Ichthyornis insects island ivory-billed woodpecker kiwi land birds little gull live male marsh mate migrate million years ago nectar North America Ocean oilbird orioles ornithologists ostrich owls parrots pecked pelican penguin pigeons pileated woodpecker predator reptiles rhea robin rock dove sea birds season SNOWY EGRET soaring song South sparrow species of bird storks survive tail terns territory THREE-WATTLED BELLBIRD TINAMOU tiny tree turkey twigs vultures warblers warm weaverbirds weighs wild wings winter young