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Interesting facts about birds 42 facts about dinosaurs Aves (birds)
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Aves (Birds) - AP BIOLOGY MATRIX
42 Facts about Dinosaurs
Bird Skeleton | Bird Anatomy | Inside a Bird | DK Find Out
Link #39: The Bones of Birds Are Hollow! | Always Learning!
Interesting Facts About Birds | Did You Know Science
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All About Bird Anatomy | Bird Academy • The Cornell Lab