Williamson's Sapsucker,Sphyrapicus thyroideus

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Williamson's Sapsucker,Sphyrapicus thyroideus, adult female at nesting cavity in aspen tree, Rocky Mountain National Park, Colorado, USA, June 2007
Williamson's Sapsucker,Sphyrapicus thyroideus, adult female at nesting cavity in aspen tree, Rocky Mountain National Park, Colorado, USA, June 2007