woodpecker not feeding chick

http://www.youtube.com/watch?v=Pn7rpqJqh0E
Woodpecker chick feeding top shot-Biology
Contrary to popular opinion, woodpeckers do not get headaches from banging on trees. They have thickened skulls and powerful neck muscles that enable them to deliver sharp blows without damaging their organs. Their stout, chisel-like bills allow them to bore into wood. The tongue of a woodpecker, often covered with barbs or sticky saliva, can be extended a considerable distance in order to dislodge ants and insect larvae from deep crevices in wood and bark. For storage, the tongue is curled around the back of the head between the skull and skin.

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