Species: White-breasted Nuthatch (Sitta carolinensis)
Photos:
November 2012
Photo taken at Valley Forge Campground
November 2012
Photo taken at Valley Forge Campground
Blog Posts:
Upside Down Bird by Backyard Biology. Excellent description explaining why the White-Breasted Nuthach spends a lot of its time in the upside down position. Great photos here as well.
Hiking Angeles Forest 
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