NATURE FACT
Woodpeckers sustain a g-force of about 1,200 as it drums its bill against tree bark. A g-force measuring between 80 and 100 is strong enough to give humans a concussion. Researchers have discovered four structures of the Woodpeckers head that make it shock-absorbent :-
* A strong yet flexible bill.
* A hyoid - a structure of bone and elastic tissue that wraps around the skull.
* An area of spongy bone in the skull.
* Little space for cerebral-spinal fluid between the skull and the brain.
Each of these elements absorb mechanical shock, allowing the Woodpecker to strike a tree at a rate of up to 22 times per second with no injury to the brain.
