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White-headed Woodpecker (Picoides albolarvatus) - Wiki latin dict size=44   common dict size=512
이미지 정보 Original File Name: Picoides_albolarvatus_FWS White-headed Woodpecker (Picoides albolarvatus).jpg Resolution: 585x710 File Size: 34790 Bytes Upload Time: 2007:08:17 20:44:45
올린이 이름 (메일주소): Unknown
사진 제목 White-headed Woodpecker (Picoides albolarvatus) - Wiki

White-headed Woodpecker (Picoides albolarvatus) - Wiki; Image ONLY
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White-headed Woodpecker (Picoides albolarvatus) - Wiki

White-headed Woodpecker
From Wikipedia, the free encyclopedia

[Photo] Male White-headed Woodpecker, Picoides albolarvatus. Source: U.S. Fish and Wildlife Service

The White-headed Woodpecker (Picoides albolarvatus) is a non-migratory woodpecker that resides in pine forests 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 Columbia through 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 Mountains to San Diego County. Mount Pinos birds are somewhat intermediate. mtDNA cytochrome b and ATP synthase subunit 6 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 adaptation for being better able to feed on the large, spiny cones of Coulter Pines (Pinus coulteri).

http://en.wikipedia.org/wiki/White-headed_Woodpecker
The text in this page is based on the copyrighted Wikipedia article shown in above URL. It is used under the GNU Free Documentation License. You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.

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