Acorn Woodpecker

Melanerpes formicivorus

The acorn woodpecker is a medium-sized woodpecker with a length of around 20 cm, and an average weight of 85 g. It is found across Central America, as well as North into the western United States and South into parts of Colombia.

Acorn woodpecker holding a nut in its beak on the campus of California State University, Chico. Photo shared on Wikipedia by Frank Schulenburg.
Acorn woodpecker holding a nut in its beak on the campus of California State University, Chico. Photo shared on Wikipedia by Frank Schulenburg.
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Community Sightings

Recent observations from the iNaturalist community

Acorn Woodpecker observed by carleydemons
Mar 1, 2026
Point Reyes National Seashore, Inverness, CA, US
bycarleydemons
Research Grade
· 2 IDs
Acorn Woodpecker observed by gaby77485
Mar 1, 2026
Geary Rd, Sunol, CA, US
byGaby Rod
Research Grade
· 2 IDs
Acorn Woodpecker observed by cole-lang
Mar 1, 2026
W Adirondack Ave, Flagstaff, AZ, US
bycole-lang
Research Grade
· 1 ID
Acorn Woodpecker observed by amyinthewild
Mar 1, 2026
Tehama County, CA, USA
byAmyInTheWild
Research Grade
· 1 ID
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