One of the largest duikers in Africa, it is found only in the western part of the Upper Guinea forest block, stretching into Sierra Leone, Liberia and west Ivory Coast (Wilson & Reeder, 1993; East, 1996; Davies & Birkenhager, 1990; Wilson & Wilson, 1990). A first rough map representing its geographic range was acquired from Haltenorth & Diller (1980), later updated for Sierra Leone in accordance with Davies & Birkenhager (1990). A general revision was obtained using East (1990), while a preliminary output was revised by Dr. R. East ( 23 June '97 )
After its formal description and the discovery of three specimens, Jentink's duiker virtually disappeared - no sightings (either real or unconfirmed) were reported for over 50 years (Shuker, 1993). This was especially troubling, as this is an antelope not to be overlooked or confused with another species. However, in 1948, a skull of an adult male was obtained in Côte d'Ivoire, and since then many specimens have been observed (Shuker, 1993).
Categorical-discrete (CD) distribution model
The species occurs primarily in forests, but can also utilise forest edges and forest mosaics (Davies & Birkenhager, 1990; East, 1990).