What level of concussive force can the skulls of some small woodpeckers withstand when drumming?

Answer

Forces equivalent to over 1,000 g's

The sheer concussive force involved in drumming can reach over 1,000 g's in some smaller species, necessitating their specialized cranial protection.

What level of concussive force can the skulls of some small woodpeckers withstand when drumming?
birdanatomyphysical characteristicwoodpeckerbeak