Chief Ecologist and Manager at the Chobe Lion Research Project, Botswana. Post-doctoral Research Associate with the Zoology Department, University of Natal. Junior Research Assistant at the Institute of Terrestrial Ecology, Scotland. 1984 Chemical factors influencing food selection by browsing ungulates in a South African savanna. Rangelands Congress, Adelaide, Australia.
Condensed tannins deter feeding by browsing ruminants in a South African savanna.
1985 Comparative consumption of vegetation components by kudus, impalas and goats in relation to their commercial potential as browsers in savanna regions. 1986 Effects of plant spinescence on large mammalian herbivores. Assessing food preferences of ungulates by acceptability indices. 1987 Palatability of woody plants to browsing ruminants in a South African savanna. The bushpig as a problem animal in sugar cane.