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By: Gedeon, Kai - Cauldwell, Andrew - Ewnetu, Mihiret - Regasa, F - Schönbrodt, Robert - Töpfer, TillType: ArticleIn: Bulletin of the African Bird ClubVolume: 22Series:Issue: 1Date: 2015-03Page Range: 70--73Publication Info: Cambridge, African Bird Club, 1994-Subjects: