Why Don't Woodpeckers Get Concussions?
BANG.
A woodpecker drives its beak into a tree.
Then again.
Then again, hundreds of times a day, digging out insects or hollowing out a home.
Bang your head on a tree just once and you will feel it.
So how does a bird do this all day and fly away fine?
People used to have a tidy answer.
A woodpecker, they said, comes with its own crash helmet: a special bone that wraps around the skull like a seatbelt, with a very long tongue attached, soaking up every blow.
It sounded cozy, and completely believable, until someone checked.
In 2022, scientists filmed real woodpeckers with high-speed cameras and built computer models of their heads.
What they found was the opposite of a cushion.
A woodpecker's head is stiff, more like a hammer.
The hit is not soaked up at all.
Most of it goes straight through to the brain.
And here is the strange part: that stiff head may not be a mistake.
Researchers think a soft, springy skull would waste energy on every peck, while a hard one lets the bird strike harder and drill faster.
The woodpecker, it seems, is built to hit, not to soften the blow.
So why is the bird not a mess?
Two things save it.
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