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Acorn woodpecker, Pinnacles National Park, 2014.

Acorn woodpeckers (Melanerpes formicivorus) rely heavily on acorns for food. In some parts of their range they create granaries or 'acorn trees' by drilling holes into trees or buildings which they will fill with acorns. The woodpeckers collect acorns that fit exactly into the holes. As the acorns dry out, the woodpeckers move the acorns to smaller holes! Granary maintainance requires a significant amount of the bird's time. In the meantime, the woodpecker will also feed on insects, sap and fruit.

U.S. National Park Service

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Pinnacles National Park, Code: PINN

National Park Service Facebook Photos

Title: Pinnacles National Park
URL: https://www.facebook.com/pinnaclesnps?fref=ts

20140719

07/19/2014

Public Can View

Organization: Pinnacles National Park
Address: 5000 Hwy 146, Paicines, CA 95043

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