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Range DescriptionThe Yellow-backed Duiker has the widest distribution of the forest duikers, ranging from south-western Senegal through all West African countries to south-western Sudan and south-west Uganda, south to northern Angola (including Cabinda) and Zambia; they also occur in the Mau forest in south-west Kenya (Kingdon and Lahm in press). They are now considered extinct in The Gambia (East 1999), although whether they actually ever formerly occurred is uncertain (Grubb et al. 1998). They were thought to have been extirpated from Rwanda (East 1999), but have been confirmed as surviving in the Nyungwe Forest (F. Mulindahabi and A. Vedder pers. comm.).