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White-necked raven
The white-necked raven (''Corvus albicollis'') is somewhat smaller (50–54 cm in length) than the common raven or indeed its nearest relative, the thick-billed raven ''C. crassirostris''. Like the Common raven, Thick-billed raven and Brown-necked raven, it is one of the larger raven species. The smaller raven species are the Australian raven, Forest raven, Little raven, Fan-tailed raven and Chihuahuan raven with the Thick-billed raven being the world's largest raven species and the Chihuahuan raven being the smallest.
==Description==
The white-necked raven has a much shorter tail than the common raven, as well as a deeper bill with a white tip that is almost as strongly arched as that of the thick-billed raven. Though predominantly black, the throat, breast and neck show a faint purple gloss. There is a large patch of white feathers on the nape of the neck.
Soars well with shallower wingbeats than other Corvidae.
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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