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Funny Walks: Cranes bob, bob, bob along when hunting

The jerky neck motions of a whooping crane looking for lunch keep its head still in space about half the time, probably helping the bird to spot food, a video study suggests.

When walking, cranes and many other birds thrust their heads forward, then let their bodies catch up. A Maryland research team now says that it has made the first measurements of a bird's natural head bobbing while hunting. The result fits the idea that head bobbing benefits a hunter, says Thomas Cronin of the University of Maryland, Baltimore County.

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