Acorn Woodpecker

(Melanerpes formicivorus)

Acorn Woodpecker Rocklin CA
Info coming soon...

Acorn Woodpecker Granary

Males have a red cap starting at the white forehead. Females have a black strip between the white forehead and the red cap.
Length: 7.5 to 9.1 inches
Weight: 2.3 to 3.2 oz
Wingspan: 13.8 to 16.9 inches
Lifespan: The oldest Acorn Woodpecker on record was at least 17 years and found in California.
Diet consists of acorns, nuts, and insects (and other arthropods) Their preferred food is flying insects which they catch in mid-air by flying out from high perches. Birds will also eat fruit, sap, oak catkins, and flower nectar, occasional grass seeds, lizards, and even eggs of their own species.
Acorn Woodpeckers practice cooperative breeding in which more than two birds take care of nestlings in the nest. This behavior is thought to occur in only nine percent of bird species.
In California populations, Acorn Woodpeckers may nest in the fall to take advantage of the fall acorn crop which is also a rare behavior among birds.
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  1. "Acorn Woodpecker, Life History". All about birds, The Cornell Lab of Ornithology. Cornell Lab of Ornithology. Retrieved October, 2016.
  2. "Acorn Woodpecker". Audubon Guide to North American Birds. Retrieved October, 2016.
  3. "Acorn Woodpecker". Wikipedia, The Free Encyclopedia. Retrieved October, 2016.