Acorn Woodpecker (Melanerpes formicivorus)
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Acorn Woodpecker

Melanerpes formicivorus (Swainson, 1827)

19–23 cmLength80 gWeight

The acorn woodpecker (Melanerpes formicivorus) is a medium-sized woodpecker with a length of around 20 cm (8 in), and an average weight of 85 g (3.0 oz).

Busiest months: April–May · Most records: United States, Colombia, Costa Rica

Least Concern

Where and when it's recorded

Acorn Woodpecker has been recorded at 320 of the 8,171 birding hotspots we track, in 9 countries and regions.

Records by month Northern Hemisphere

Where it's recorded most

  1. Madera Canyon – Santa Rita LodgeUnited States33,170 records
  2. Ash Canyon Bird SanctuaryUnited States12,655 records
  3. Ramsey Canyon PreserveUnited States10,459 records
More places
  1. Cave Creek Canyon – South ForkUnited States9,146 records
  2. Irvine Regional ParkUnited States8,419 records
  3. Portal – Cave Creek RanchUnited States7,840 records
  4. Frank G. Bonelli RP/Puddingstone Reservoir and vicinityUnited States6,875 records
  5. PortalUnited States6,874 records
  6. Lake Los Carneros ParkUnited States6,270 records
  7. Davis Mountains SPUnited States6,024 records

Countries and regions with the most records

United StatesColombiaCosta RicaMexicoGuatemalaBelizeHondurasPanama

eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.

About

It is found across Central America, as well as North into the western United States and South into parts of Colombia.

Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia

Questions

How big is the Acorn Woodpecker?

The Acorn Woodpecker is about 19–23 cm long and weighs around 80 g.

Where does the Acorn Woodpecker live?

Its breeding range: North America, Middle America, South America: northwestern USA to Colombia. It is most often recorded in United States, Colombia and Costa Rica.

When is the best time to see the Acorn Woodpecker?

At the hotspots we track, it is recorded most in April and May (Northern Hemisphere).

Is the Acorn Woodpecker endangered?

The IUCN Red List classifies the Acorn Woodpecker as Least Concern.

What does the Acorn Woodpecker eat?

Main food: Seeds.

What family is the Acorn Woodpecker in?

It belongs to the family Woodpeckers (Picidae), order Piciformes.

At a glance

Length
19–23 cm
Weight
80 g
Habitat
Woodland
Diet
Seeds
Lifestyle
Perches in trees
Migration
Resident (barely migrates)
Conservation
Least Concern
More measurements
Wing
140 mm
Tail
84 mm
Bill
27 mm
Tarsus
22 mm

Averages from the AVONET dataset; length from field guides where available.

Range

North America, Middle America, South America: northwestern USA to Colombia

Breeding range, IOC World Bird List 15.2

Classification

Family
Woodpeckers Picidae
Genus
Melanerpes

Other birds in the genus Melanerpes

Acorn Woodpecker

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Free to use with credit: “Illustration: Bird Album (birdalbum.com)”. Drawn by AI from a reference photo by Lord Daymien Forde. ↗

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