A clown-faced western woodpecker with a complicated social structure, living in small colonies. Best known for its habit of hoarding acorns: the birds drill small holes in a dead snag, then harvest acorns in fall and store them in these holes, to be eaten during winter. Such a “granary tree” may be used for generations and may be riddled with up to 50,000 holes. Nesting is a group activity, with several adults (up to 12 or more) taking part in incubating the eggs and feeding the young in a single nest.

 

 

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