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The sagebrush sparrow (''Artemisiospiza nevadensis'') is a medium-sized sparrow of the western United States and northwestern Mexico. It previously was placed in the genus ''Amphispiza'', but recent evidence suggested it be placed in its own genus (Klicka and Spellman, 2007; DaCosta et al., 2009) Sagebrush sparrows are indeed often tied to sagebrush habitats, although they can also be found in brushy stands of saltbush, chamise, and other low shrubs of the arid interior west. The species breeds in the interior of the Western United States (between the Rocky Mountains and the coastal ranges such as the Cascades). It winters in the Mexican-border states and northern Sonora and Chihuahua. Although sagebrush sparrow numbers are generally strong, significant declines in sagebrush habitat in the west could be expected to decrease populations in the near future. The sagebrush sparrow, together with the Bell's sparrow, were considered conspecific and known as the sage sparrow before being split by the AOU in 2013. ==References== * Klicka, J., and G. M. Spellman. 2007. A molecular evaluation of the North American “grassland” sparrow clade. ''Auk'' 124:537–551. * DaCosta, J. M., G. M. Spellman, P. Escalante, and J. Klicka. 2009. A molecular systematic revision of two historically problematic songbird clades: Aimophila and Pipilo. ''Journal of Avian Biology'' 40:206–216. 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「sagebrush sparrow」の詳細全文を読む スポンサード リンク
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