Photo: Acorn woodpecker plays peekaboo

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Our photo of the day comes from Oregon's Cascade Mountains.

You know how kids always draw trees with holes that have a bird looking out? I guess there's a reason, as evidenced in this completely charming photo of an acorn woodpecker taken by Mark Heatherington.

Would you like to see your nature photo featured as the TreeHugger photo of the day? Join TreeHugger’s Reader Photo Pool on Flickr and add your pictures to the group.

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