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[[Ostrich]]es, [[penguin]]s, and [[emu]]s are birds that don't fly, although penguins have sometimes been said to "fly" underwater. [[Robin]]s, [[sparrow]]s, [[cardinal (bird)|cardinal]]s, and [[eagle]]s are more typical flying birds.

[[Ostrich]]es, [[penguin]]s, and [[emu]]s are birds that don't fly, although penguins have sometimes been said to "fly" underwater. [[Robin]]s, [[sparrow]]s, [[cardinal (bird)|cardinal]]s, and [[eagle]]s are more typical flying birds.

Some evolutionists believe that birds have evolved from [[dinosaur]]s, although this view is disputed by both [[creationism|creationists]] and some [[evolution|evolutionists]].

Almost all evolutionary biologists, with rare exceptions, view the fossil evidence as strongly indicating that birds are the only extant group of dinosaurs, a branch of the theropods, which included ''Velociraptor'' and ''Deinonychus''. This view is disputed by [[creationism|creationists]].

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