From the U.S. Fish and Wildlife Service's online digital media library.
Check http://images.fws.gov/ for higher quality version.

Metadata
Title: Red-headed woodpecker
Alternative Title: Melanerpes erythrocephalus
Creator: Menke, Dave
Source: WV-9407
Publisher: U.S. Fish and Wildlife Service
Contributor: NATIONAL CONSERVATION TRAINING CENTER-PUBLICATIONS AND TRAINING MATERIALS
Language: EN - ENGLISH
Rights: (public domain)
Audience: (general)
Subject: bird, Desoto National Wildlife Refuge, NWR, Iowa
Date Issued: February 10 2003