Feathered friends: Ostriches provide clues to dinosaur movement

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Feathered friends: Ostriches provide clues to dinosaur movement

The flightless ostrich uses its wings as sophisticated air-rudders and braking aids when running at high speed and may provide valuable information about how its dinosaur ancestors used their feathered forelimbs to move more efficiently. A small leg muscle, if also present in dinosaurs may have reduced the energetic cost of carrying a heavy body.