The greatest headbanger of them all

Having just seen all those woodpeckers in Parambikulam crazily banging their heads, I thought this article was very well-timed!

Woodpecker's head inspires shock absorbers

"A woodpecker's head experiences decelerations of 1200g as it drums on a tree at up to 22 times per second. Humans are often left concussed if they experience 80 to 100g, so how the woodpecker avoids brain damage was unclear. So Sang-Hee Yoon and Sungmin Park of the University of California, Berkeley, studied video and CT scans of the bird's head and neck and found that it has four structures that absorb mechanical shock.

These are its
hard-but-elastic beak;
a sinewy, springy tongue-supporting structure that extends behind the skull called the hyoid;
an area of spongy bone in its skull;
and the way the skull and cerebrospinal fluid interact to suppress vibration."

Read the article for more details.