page_title: Acorn woodpecker
hierarchical_section_title: Acorn woodpecker
caption_attribution_description: English: Acorn woodpeckers (Melanerpes formicivorus) in a tree on Angel Island (California).
context_page_description: The acorn woodpecker is a medium-sized woodpecker, 21 cm long, with an average weight of 85 g.
context_section_description: The acorn woodpecker (Melanerpes formicivorus) is a medium-sized woodpecker, 21 cm (8.3 in) long, with an average weight of 85 g (3.0 oz).
caption: 3 acorn woodpeckers in California. Two face opposite directions while one breaks open an acorn.
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