Acorn Woodpecker m.
A common bird of western oak forests. It lives in extended family groups....all members spend hours storing thousands of acorns in carefully tended holes in trees and telephone poles. One granary tree may have up to 50,000 holes in it, each of which is filled with an acorn in autumn. Sexes similar, but male has solid red crown; female has black band between forehead and red.
Peterson Field Guides Facebook page Oct 15, 2012