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The canyon wren (''Catherpes mexicanus'') is a small North American songbird of the wren family Troglodytidae. It is resident throughout its range and is generally found in arid, rocky cliffs, outcrops and canyons. It is a small bird that is hard to see on its rocky habitat; however, it can be heard throughout the canyons by its distinctive loud and beautiful song. It is currently in a monotypic taxon and is the only species in the genus ''Catherpes''. ==Taxonomy== The taxonomy of the species has been altered and debated for many years with between three and eleven subspecies being proposed at various times. Generally, three subspecies are recognized. Originally in the genus ''Thryothorus'', it was moved into the genus ''Salpinctes'' along with the rock wren (''Salpinctes obsoletus''), where some researchers still place it; however, generally now the species is in the only species in the genus ''Catherpes''. The three generally recognized subspecies are: *''C. m. mexicanus'' occurring in the central and southern portions of the Mexican Plateau *''C. m. albifrons'' occurring in the northern portion of the Mexican Plateau, into west-central through western Texas *''C. m. conspersus'' occurring in the remaining portion of the range in the U.S. and Canada These subspecies are distinguished by the bill of ''C. m. albifrons'' which is generally longer than that of ''C. m. mexicanus'', and its plumage paler, with upperparts more grayish brown, with narrower black bars on tail. In ''C. m. conspersus'' the plumage is paler and it is smaller than ''C. m. mexicanus''. 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「Canyon wren」の詳細全文を読む スポンサード リンク
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