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The various wing shapes of birds have evolved as food gathering, migration and habitat impact their survival.
The new study of carrion crows is the first to explicitly show that any other species besides humans can link voluntary vocalizations with an understanding of quantity. Sven-Erik Arndt/Arterra ...
Why do birds have different types of wings? The various wing shapes of birds have evolved as food gathering, migration and habitat impact their survival Quails have elliptical wings.
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