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Jerdon's nightjar
Jerdon's nightjar (''Caprimulgus atripennis'') is a medium-sized nightjar species which is found in southern India and Sri Lanka. Formerly considered as a subspecies of the long-tailed nightjar it is best recognized by its distinctive call.〔Grimmett ''et al.'' (1999)〕 The common name commemorates the surgeon-naturalist Thomas C. Jerdon who described the species although it was also referred to in the past as the Ghat nightjar on account of its habitat.
==Taxonomy==
Thomas C. Jerdon first described this species in an annotation to his 1845 treatment of the Indian jungle nightjar (''C. indicus'') in the ''Illustrations of Indian ornithology''. Subsequently it was sometimes lumped again with ''C. macrurus'', but the co-occurrence of this form and large-tailed nightjar ''C. macrurus'' without interbreeding in the northeast of the Indian peninsula was noted in 1987 suggesting their distinctness. It has since been reaffirmed by studies on vocalization and considered a full species. The subspecies in Sri Lanka is ''C. a. aequabilis''. Jerdon's type locality mentioned as ''Ghauts'' has been considered to be the Eastern Ghats west of Nellore.〔Cleere (2002)〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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