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this post was submitted on 20 Jul 2024
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Today I Learned (TIL)
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It's only to prevent damage, not concussions. They benefit from concussions and the scarring it causes. It's one more part of their "helmet".
Edit: IM WRONG THERE HAS BEEN BETTER RESEARCH AND I CANT FIND THE ARTICLE ON BRAIN SCARRING.
Edit 2: here's a better reason:
"The size and orientation of the bird’s brain safeguard it, the authors say. Even the strongest of wood pecks left the bird brains with less than 60% of the pressure needed to give a human brain a concussion."
https://www.science.org/content/article/contrary-popular-belief-woodpeckers-don-t-protect-their-brains-when-headbanging-trees