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Researchers study chickens, ostriches, penguins to learn how flight feathers evolved


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If you took a careful look at the feathers on a chicken, you'd find many different forms within the same bird -- even within a single feather. The diversity of feather shapes and functions expands vastly when you consider the feathers of birds ranging from ostriches to penguins to hummingbirds. Now, researchers have taken a multidisciplinary approach to understanding how all those feathers get made.9UD_9uaV1tE

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