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Jerdon's babbler (''Chrysomma altirostre'') is an endangered passerine bird from South Asia. Formerly placed in the Timaliidae family – hence the common name "babbler" –, the genus ''Chrysomma'' and its relatives are actually closer to the typical warblers and parrotbills in the Sylviidae.〔Jønsson & Fjeldså (2006), Collar & Robson (2007), BLI (2008, 2009)〕 The common name commemorates the surgeon-naturalist Thomas C. Jerdon. ==Description== Measuring 16–17 cm in length, it is quite intermediate in habitus between certain typical warblers (''Sylvia'') and the parrotbills (''Paradoxornis''). Like these, it is a drab bird with a long tail used to balance when creeping through the vegetation; its bill is thicker than in ''Sylvia'' but not as heavy as in ''Paradoxornis''. Buffy chestnut brown above and a slightly lighter yellowish-brown on the belly, its lores are pale greyish, as are the throat and breast. The tail and a wing patch are redder than the rest of the upperside. The legs and feet are dark, the bill is greyish-horn colored above and pale below; the eyes' irides are yellowish-brown and a thin nude ring of greenish-yellow skin surrounds the eye.〔Baral & Eames (1991), BLI (2009)〕 The sexes are alike; young birds have a more orange hue to the upperside plumage, and the lower bill is pink. Differences between subspecies are slight, with the central population essentially have richer chestnut brown and darker grey colours.〔Baral & Eames (1991), Showler & Davidson (1999), BLI (2009)〕 Its relative, the yellow-eyed babbler (''C. sinense''), looks like a brighter version of the same but has somewhat more vivid colors, with white replacing grey in the plumage, an additional white supercilium, yellowish legs, feet and irides, and an orange-yellow eye-ring.〔 The song is a weak 4- to 8-note warbling ''chi-chi-chi-chew-chew-chew'', ''tew-tew-tew-tew chew'' or ''ih-ih-ih-ih chew chitit chew i'wwiuu'', with a drawn-out end note and sometimes starting with a chatter of ''itch, itit'' or ''tchew''. Birds sing usually in the early morning and in the evening, perching upright on a reed, with the head slightly elevated. Calls include a short ''tic'' or ''tsik'', sometimes extended into a series ''ts-ts-tsik'' which may end in a plaintive ''tew''.〔 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「Jerdon's babbler」の詳細全文を読む スポンサード リンク
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