- White-headed Woodpecker
name = White-headed Woodpecker
status = LC | status_system = IUCN3.1
status_ref = [IUCN2006|assessors=
BirdLife International|year=2004|id=47360|title=Picoides albolarvatus|downloaded=06 May 2006 Database entry includes justification for why this species is of least concern]
image_width = 200px
image_caption = Male White-headed Woodpecker
phylum = Chordata
classis = Aves
genus = "
species = "P. albolarvatus"
binomial = "Picoides albolarvatus"
binomial_authority = (Cassin, 1850)
* "P. a. albolarvatus" Taxobox_authority | author = (Cassin | date = 1850) Common White-headed Woodpecker
* "P. a. gravirostris" Taxobox_authority | author = (Grinnell | date = 1902) Southern White-headed Woodpecker
* "Leuconerpes albolarvatus"
Taxobox_authority | author = (Cassin | date = 1850)
The White-headed Woodpecker ("Picoides albolarvatus") is a non-migratory
woodpeckerthat resides in pineforests of the mountains of western North America. It has a black body (approximately 20 cm long) and white head. It has white primary feathers that form a crescent in flight. Males have a red spot at the nape of the neck.
The range of the White-headed Woodpecker stretches in the mountains from
British Columbiathrough southern California. They form nests in dead trees or snags and reproduce once per year.
Most of the range is occupied by the
nominate subspecies. "P. a. gravirostris", which has a longer bill - especially in males - and tail, is only found on mountaintops of the southernmost part of the species' range, from the San Gabriel Mountainsto San Diego County. Mount Pinosbirds are somewhat intermediate. mtDNAcytochrome "b" and ATP synthase subunit6 sequence data confirms this arrangement and also suggests that the Mount Pinos birds are closer to "P. a. gravirostris" (Alexander & Burns, 2006). Apparently, the larger bill of the southern subspecies is an adaptationfor being better able to feed on the large, spiny cones of Coulter Pines ("Pinus coulteri").
* Alexander, Matthew P. & Burns, Kevin J. (2006): Intraspecific Phylogeography and Adaptive Divergence in the White-headed Woodpecker. "Condor" 108(3): 489–508. DOI: 10.1650/0010-5422(2006)108 [489:IPAADI] 2.0.CO;2 [http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1650%2F0010-5422(2006)108%5B489%3AIPAADI%5D2.0.CO%3B2 HTML abstract]
External links and references
* [http://www.npwrc.usgs.gov/resource/1998/forest/species/picoalbo.htm USGS Forest and Rangeland birds]
* [http://www.dfg.ca.gov/whdab/html/B305.html California Department of Fish and Game]
* [http://www.royalbcmuseum.bc.ca/end_species/species/whtwood.html Royal British Columbia Museum]
* [http://audubon2.org/webapp/watchlist/viewSpecies.jsp?id=211 Audubon watchlist]
* [http://ca.geocities.com/woodpeck2006/whiteheaded.html White-headed Woodpecker] , a bibliographic resource
* [http://vireo.acnatsci.org/search.html?VIREO_SESSION_ID=3971226539fb08d98b6fa54d8ad1b24b&Form=Search&SEARCHBY=Common&KEYWORDS=white-headed+woodpecker&showwhat=images&AGE=All&SEX=All&ACT=All&Search=Search&VIEW=All&ORIENTATION=All&RESULTS=24 White-headed Woodpecker photo gallery] VIREO
* [http://ibc.hbw.com/ibc/phtml/especie.phtml?idEspecie=3881 White-headed Woodpecker videos] on the Internet Bird Collection
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