Beisa Oryx (Oryx beisa, often treated as O. b. beisa) is found in northern and central Somalia and the Ogaden region of Ethiopia north to Berbera, west to Eritrea, and south into the Awash Valley (Groves 2011).
- Groves, C.P. 2011. Genus Oryx. Pp. 688-692 in: Wilson, D.E. and Mittermeier, R.A., eds. Handbook of the Mammals of the World. Volume 2. Hoofed Mammals. Lynx Edicions, Barcelona.