Woodpecker beaks divulge shock-absorbing properties

Scales, sutures and porosity help the birds hammer without going stupid

SHOCK AND AWE  The remarkable shock-absorbing powers of a red-bellied woodpecker beak come from such details as its dense outer layer of skinny scales that dissipate energy as they scrape against each other.

Bildagentur Zoonar GmbH/Shutterstock

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