1. BREE, C.R. 1875. A history of the birds of Europe not observed in the British Isles, Vol. 1. Covent Gardens. George Bell & Sons.
2. BROWN, C.J. 1988. A study of the bearded vultureGypaetus barbatusin southern Africa. Ph.D. thesis, University of Natal, Pietermaritzburg.
3. BROWN, C.J. in press a. Breeding biology of the bearded vulture in southern Africa, Part II: The nestling period.Ostrich.
4. BROWN, C.J. in press b. Distribution and status of the bearded vultureGypaetus barbatusin southern Africa.Tauraco.
5. BROWN, L.H., URBAN, E.K. & NEWMAN, K. 1982. The birds of Africa, Vol. 1. Academic Press, New York.