| Witherby, H.F. (1901): An ornithological expedition to the White Nile. The Ibis ser.8 v.1 (2): 237-278. | | Language: English | Type: Normal Paper | | Countries where study took place: Sudan | | Species: Corvus, -Corvus albus, -Corvus ruficollis | | Species Full Names: Corvus Linnaeus, 1758Corvus albus Statius Müller, 1776Corvus ruficollis Lesson, 1831 | | Themes: Geographical distribution, - Observation in general/Expedition | | Full document |
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