Why Woodpeckers do not get Concussions?- Animated Video

Woodpecker bangs its head against the tree at the speed of 16 miles an hour, without causing any damage to its head. Find out how.
Background music: Running Waters by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Artist: http://audionautix.com/

Sources :
http://bjo.bmj.com/content/86/8/843
https://www.ncbi.nlm.nih.gov/pubmed/55721
http://www.nature.com/eye/journal/v21/n1/full/6702163a.html

Видео Why Woodpeckers do not get Concussions?- Animated Video канала The Science Monk