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pied raven
The pied raven (''Corvus corax varius'' morpha ''leucophaeus'') was a colour morph〔Nomenclature of morphs - variants and forms - is unregulated by the ICZN. Arguably, the pied raven could be considered a ''f. loc.'' (local form)〕 of the North Atlantic subspecies of the common raven which was only found on the Faroe Islands and has disappeared since the mid-twentieth century. It had large areas of white feathering, most frequently on the head, the wings and the belly, and its beak was light brown. Apart from that, it looked like the black ravens (morpha ''typicus'').
==History==
The pied raven received binomial names such as ''Corvus leucophaeus'' (by Vieillot, 1817) and ''Corvus leucomelas'' (by Wagler, 1827). It is currently referred to as ''Corvus corax varius'' morpha ''leucophaeus''.
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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