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 wildharttmom
Apr 18, 2026
Landmark Cir, Redding, CA, US
bywildharttmom
Research Grade
· 2 IDs
Acorn Woodpecker observed by gabi_m
Apr 18, 2026
McAbee & Thorntree(N), San Jose, CA 95120, USA
bygabi_m
Research Grade
· 1 ID
Acorn Woodpecker observed by seattleslayyyer
Apr 18, 2026
Thorntree Dr, San Jose, CA, US
bySeattle Slayyyer
Research Grade
· 1 ID
Acorn Woodpecker observed by katsfinds
Apr 18, 2026
Guadalupe Oak Grove Park, San Jose, CA, US
bykatsfinds
Research Grade
· 1 ID
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