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The short-billed pigeon (''Patagioenas nigrirostris'')〔Johnson, Kevin P.; de Kort, Selvino; Dinwoodey, Karen, Mateman, A. C.; ten Cate, Carel; Lessells, C. M. & Clayton, Dale H. (2001): A molecular phylogeny of the dove genera ''Streptopelia'' and ''Columba''. ''Auk'' 118(4): 874-887. (PDF fulltext ) 〕 is a largish pigeon which breeds from southern Mexico south to northwestern Colombia. It is a member of a clade of ''Patagioenas'' that contains the smaller and rather plain species with characteristic calls〔 that constitute the subgenus ''Oenoenas''.〔Mahler, Bettina & Tubaro, Pablo L. (2001): Relationship between song characters and morphology in New World pigeons. ''Biol. J. Linn. Soc.'' 74(4): 533–539. (HTML abstract)〕 It is found in lowland forest canopy and semi-open woodland, and builds a rudimentary platform nest out of twigs high in a tree or amongst vines. It lays one white egg. The short-billed pigeon is long and weighs . It is unpatterned and mainly wine-purple in colour, becoming browner on the belly and more olive-brown on the back. The tail and primary flight feathers are blackish, the bill is black, and the legs and eyes are purple-red. The female is slightly duller and browner than the male, and the juvenile bird has a greyish brown head, neck and breast, with cinnamon scaling on the head and upperparts. The short-billed pigeon has a complex, loud and high-pitched call ''coo... cu-COO k’CO coohoo''; this is usually uttered singly or at least with considerable pauses between calls.〔 It is normally sighted in pairs as it forages in the tree tops for mistletoe, fruits and berries, but may also be seen on tracks and roadsides seeking grit or small invertebrates. In southern Central America, this species is replaced at higher altitudes by its close relative, the very similar ruddy pigeon, ''Patagioenas subvinacea''. They can be distinguished by the slower, more complex "song" of the short-billed pigeon.〔 ==References== * Stiles, F. Gary & Skutch, Alexander Frank (1989): ''A guide to the birds of Costa Rica''. Comistock, Ithaca. ISBN 0-8014-9600-4 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Short-billed pigeon」の詳細全文を読む スポンサード リンク
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