Woodpecker heads 'act like stiff hammers', not safety helmets, study finds - Daily Mail

An analysis of woodpeckers led by a University of Antwerp expert has shown their skulls don't act like shock-absorbing helmets, but more like metal hammers.

Scientists have debunked a popular theory of how the woodpecker can repeatedly hit its beak against a tree at high speed without doing itself brain damage.  The researchers analysed high-speed video… [+4728 chars]

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