Wednesday, September 1, 2010

Woodpeckers Are Soft-Headed


Woodpeckers Are Soft-Headed

Woodpeckers bash their heads against wood about 20 pecks every second,
so you’d think they’d need heads made of steel to survive. Instead, the reality is that woodpecker heads are relatively soft.
Each bird is born with a soft, sponge-like mass behind its beak that absorbs the shock created by pecking.

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