What primary function do a woodpecker's stiff, wedge-shaped tail feathers serve while clinging to a tree?

Answer

Acting as a prop or brace to stabilize the body

The stiff tail feathers press against the bark, forming a crucial third point of contact that stabilizes the bird against the powerful forces generated during drumming.

What primary function do a woodpecker's stiff, wedge-shaped tail feathers serve while clinging to a tree?
birdanatomyphysical characteristicwoodpeckerbeak