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''Luscinia '' is a genus of smallish passerine birds, containing the nightingales and relatives. Formerly classed as members of the thrush family Turdidae, they are now considered to be Old World flycatchers (Muscicapidae) of the chat subfamily (Saxicolinae). The chats are a lineage of Old World flycatchers that has evolved convergently to thrushes. ==Description== The ''Luscinia'' species are stocky small birds, 13–16 cm long with an upright stance and a moderately short frequently cocked tail. They watch for insects, worms and other invertebrates from a low perch, and feed mostly on the ground, hopping, with frequent stops, on their strong legs. They are territorial during the breeding season, and most occur as far north as to be migratory.〔Grimmett ''et al.'' (1999), Svensson ''et al.'' (1999)〕 In the three species named as nightingales, the sexes are similar. They are plain brown above, whitish below with light streaking, and have a rufous tail. In the other ''Luscinia'' species, the male is much brighter than the cryptic, usually brownish-grey female. Males have a dark blue, black or brown back, and red, orange or blue on the throat and upper breast. Several have white or rufous patches on the sides of the tail, giving a pattern recalling that of the closely related wheatear (''Oenanthe''), or some of the less closely related Muscicapinae (e.g. red-breasted flycatcher, ''Ficedula parva''). The songs of this genus are often complex and musical, especially in the "typical" nightingales.〔 They are birds of Eurasia, occurring from the subarctic to the tropical regions. They are plentiful in temperate regions, and many of the birds in this genus are strongly migratory, wintering in tropical Africa, India or Southeast Asia.〔 The breeding habitat is typically scrub or forest, and their cup nest is usually constructed low in a bush. The birds can be difficult to see in dense undergrowth, especially if not singing, but they may frequent somewhat more open habitats in their winter quarters.〔 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「Luscinia」の詳細全文を読む スポンサード リンク
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