Woodpeckers (Picidae)
Acorn Woodpecker (Melanerpes formicivorus) - HBW 7, p. 441
French: Pic glandivore
German: Eichelspecht
Spanish: Carpintero Bellotero
Taxonomy: Picus formicivorus Swainson, 1827, Temiscáltepec, Mexico.
Geographical variation clinal, and some races rather poorly defined. Proposed race martirensis (N Baja California) considered indistinguishable from bairdi. Race lineatus doubtfully distinct from albeolus. Seven subspecies currently recognized.
Subspecies and Distribution:
- bairdi Ridgway, 1881 - NW Oregon S to N Baja California.
- formicivorus (Swainson, 1827) - Arizona, New Mexico and W Texas S to SE Mexico (W of Chiapas).
- angustifrons Baird, 1870 - extreme S Baja California.
- bairdi Ridgway, 1881 - NW Oregon S to N Baja California.
- formicivorus (Swainson, 1827) - Arizona, New Mexico and W Texas S to SE Mexico (W of Chiapas).
- angustifrons Baird, 1870 - extreme S Baja California.
- albeolus Todd, 1910 - SE Mexico (E Chiapas, probably also Tabasco and Campeche), NE Guatemala and Belize.
- lineatus (Dickey & van Rossem, 1927) - Chiapas E to Guatemala and N Nicaragua.
- striatipectus Ridgway, 1874 - Nicaragua to W Panama.
- flavigula (Malherbe, 1849) - Colombia (W & C Andes and W slope of E Andes).
- Least Concern Enlarge map
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An adult in the process of excavating a nest cavity in a dead walnut tree. Locality Ventura County, California, USA (United States) (ssp bairdi)
Don DesJardin 13 March 2010 3 years ago 48 sec 4.8 -
bird perching in tree at Posada Barrancas - Copper Canyon Locality Chihuahua State, Mexico (Northern)
Thore Noernberg 26 February 2013 9 weeks ago 32 sec 4.6 -
Two scenes of adults, first being an apparent territorial squabble, second being an individual removing an acorn from one "grana Locality Ventura County, California, USA (United States) (ssp bairdi)
Don DesJardin 8 March 2010 3 years ago 45 sec 4.6 -
A male on top of a pole calling repeatedly Locality San Miguel, Santiago de Cali, Valle del Cauca Department, Colombia
Pere Sugranyes 16 July 2010 2 years ago 33 sec 4.5 -
Three scenes of an adult perched in different positions and calling in the first scene. Locality Ventura County, California, USA (United States) (ssp bairdi )
Don DesJardin 10 March 2010 3 years ago 52 sec 4.5 -
An adult male on a branch, feeding on seeds Locality California, USA (United States) (ssp bairdi)
Don DesJardin 30 April 2003 6 years ago 15 sec 4.5
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Female perched and posing
Locality Miriam's Quetzals, San Gerardo de Dota, San José Province, Costa Rica
Róger Rodríguez 17 February 2013 11 weeks ago 4.2 -
Female
Locality San Gerardo de Dota, San José Province, Costa Rica
Marc FASOL 10 November 2011 24 weeks ago 4.2 -
Mating Pair Acorn Woodpeckers - Male on left
Locality Walnut Creek, Contra Costa County, California, USA (United States)
Ethan Winning 11 November 2011 1 week ago ADDED LAST MONTH 4 -
Adult storing acorns
Locality Laguna Seca Regional Park, Monterey County, California, USA (United States)
pjdunn 3 September 2008 1 year ago 4 -
Individual perched on a fence rail.
Locality Savegre Mountain Hotel, San Gerardo de Dota, San José Province, Costa Rica
Miriam Bauman 3 February 2011 2 years ago 4 -
Acorn Woodpecker
Locality Walnut Creek, Contra Costa County, California, USA (United States)
Ethan Winning 30 July 2012 1 week ago ADDED LAST MONTH 3.9
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A male calling repeatedly. Locality San Miguel, Santiago de Cali, Valle del Cauca Department, Colombia
(ssp flavigula)
Pere Sugranyes 1 January 2005 14 weeks ago 4 -
An adult bird calling. Locality Ventura County, California, USA (United States)
(ssp bairdi)
Don DesJardin 10 March 2010 15 weeks ago 4
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