Why Woodpeckers Don't Get Brain Damage

If a human tried chopping wood with his head, he'd lose at least one eye and sustain permanent brain damage. But woodpeckers do it all the live long day and sustain zero headular damage. How do they do it?

Theories have included: super powerful muscles, a special injury-preventing drilling technique, or a protective placement of the brain inside the skull. But no one has systematically analysed the mechanics of a woodpecker's skull in as much detail as Fan Yubo and his team at the Key Laboratory for Biomechanics and Mechanobiology at Beihang University in China, who published their work today in Science China Press.

They spent three years studying the mechanical properties, microstructure and composition of the cranial bone and beak of the woodpecker, and compared it to that of the lark. They found that woodpeckers have developed their own amazing nanofabrication and self assembly capabilities in their cranial bone structure over millions of years of evolution.

The strength of the two types of birds' beaks is actually similar. But the woodpecker's cranial bone is much stronger than the lark's, the researchers found. That's thanks to having more "plate-like spongy bone" in its cranium, which makes it resistant to deformation. Specifically, it has a larger volume of structures called trabeculae, which are tiny spaces in the bone that form a mesh filled with bone marrow. The woodpecker's trabeculae are also spaced very close together, which helps diffuse impact. In the image, the woodpecker cranium bone is A; the lark's is B. C is the woodpecker's beak, D is the lark's.

The researchers hope their work might inspire new protective headgear for humans. I'm just happy to know this mystery of nature is solved. [Science China Press]

Image: Shutterstock/Gregory Synstelien

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    As interesting as this may be, GIZmodo. Where's the technology in this?

      Rather, should I say gadgetry

        Gizmodo = celebration + exploration of technology, gadgets, geek culture and cool weird science.
        I'll let you guess which this falls into ;)

          I think we can all guess there :P

          I don't have a problem with these kind of articles, I was just curious as to why so thanks :)

            All good man. :) Hey, btw thanks for all your tips to the Giz tips box recently. Keep them coming!

              Thanks man and no worries. And I'm glad they're going through but the 'story idea' can be a bit confusing when sending a tip. Either way, loving everything else :)

    soo.... where's the explanation on why a different beak structure stops brain damage?

    Just thinking how amazingly well the photo with this story matches the photo in the story below. Cool.

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