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:''"Junco" is also a shrub in the genus ''Adolphia'' and the Spanish term for rushes (genus ''Juncus'').'' A junco , genus ''Junco'', is a small North American bird. Junco systematics are still confusing after decades of research, with various authors accepting between three and twelve species. Despite having a name that appears to derive from the Spanish term for the plant genus ''Juncus'' (rushes), these birds are seldom found among rush plants, as these prefer wet ground, while juncos like dry soil. Their breeding habitat is coniferous or mixed forest areas throughout North America, ranging from subarctic taiga to high altitude mountain forests in Mexico and Central America south to Panama. Northern birds usually migrate farther south; southern populations are permanent residents or altitudinal migrants, moving only a short distance downslope to avoid severe winter weather in the mountains. These birds forage on the ground. In winter, they often forage in flocks. They eat mainly insects and seeds. They usually nest in a well-hidden location on the ground or low in a shrub or tree. ==Systematics== * Dark-eyed junco, ''Junco hyemalis'' * * Gray-headed junco, ''Junco hyemalis caniceps''—sometimes considered distinct species * * Oregon juncos, ''oreganus'' subspecies group—considered by some to be a distinct species * * Pink-sided junco, ''Junco hyemalis mearnsi''—sometimes included with ''oreganus'' group in distinct species * * Red-backed junco, ''Junco hyemalis dorsalis''—sometimes included with ''J. h. caniceps'' in distinct species * * Slate-colored juncos, ''hyemalis'' subspecies group—sometimes considered distinct species * * White-winged junco, ''Junco hyemalis aikeni''—sometimes considered distinct species * Guadalupe junco, ''Junco insularis'' * Yellow-eyed junco, ''Junco phaeonotus'' * * Baird's junco, ''bairdi'' group * * Chiapas junco, ''fulvescens'' group * * Guatemala junco, ''alticola'' group * * Mexican junco, ''phaeonotus'' group * Volcano junco, ''Junco vulcani'' 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「Junco」の詳細全文を読む スポンサード リンク
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