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The Jacobin cuckoo, pied cuckoo, or pied crested cuckoo (''Clamator jacobinus'') is a member of the cuckoo order of birds that is found in Africa and Asia. It is partially migratory and in India, it has been considered a harbinger of the monsoon rains due to the timing of its arrival. It has been associated with a bird in Indian mythology and poetry, known as the ''chatak'' (Sanskrit: चातक) represented as a bird with a beak on its head that waits for rains to quench its thirst. ==Description== This medium-sized, slim black and white cuckoo with a crest is distinctive. The white wing patch on the black wing and the pattern make it unmistakable even in flight. They are very vocal during the breeding season. The call is a ringing series of whistling notes "piu-piu" with the calls of the nominate form more rapid and slightly mellower. In India the subspecies ''serratus'' (Sparrman, 1786) is a summer breeding visitor to northern India and is believed to migrate to southern Africa. This is larger and longer winged than the nominate subspecies found in the southern peninsular region and Sri Lanka is said to be a local migrant. No ringing evidence exists to support the actual migration to Africa. In Africa, subspecies ''serratus'' and ''pica'' (Hemprich & Ehrenberg, 1833) show two phases, a pied phase with white or whitish below and a black phase where the only white is on the wing patch. Mating appears to be assortative, with pied phase males pairing with pied phase females. An all-rufous color phase has been noted in Central Africa.〔 There is lack of clarity on the migration and plumage variation involved. Subspecies ''pica'' has been said to be the form that migrates between Africa and India〔 however Rasmussen & Anderton (2005) suggest ''serratus'' as being the valid name for the Afro-Indian migrants.〔 In the past some other African subspecies have been suggested such as ''hypopinarus'' from South Africa and ''caroli'' from the Gabon. 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「Jacobin cuckoo」の詳細全文を読む スポンサード リンク
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