How woodpeckers avoid concussions [Life Lines]

By Hector Bottai (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

I just read an interesting blog entry from I Spy Physiology describing how woodpeckers avoid getting concussions even though they routinely bang their heads. By routinely, I mean an impressive 12,000 times a day approximately. I was amazed to learn that each time a woodpecker taps a tree, the impact is about 10 times that of an average hit in football. Turns out woodpeckers have...

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