ABSTRACT
The Serengeti-Mara ecosystem with an area nearly 25 million hectares contains a variety of habitats (Grzimek, 1961; Bell, 1971; Kruuk, 1972; Taiti, 1973; Talbot and Talbot, 1963). Two of the three notable attractions of this area are the Serengeti National Park in north-west Tanzania and the Masai Mara Game Reserve (south-west Kenya), (see Schaller, 1972). The third, and by far the most publicized, is the annual migration of more than one million animals, principally wildebeest, zebra and Thomson’s Gazelle, over a large segment of the region (Grzimek, 1961; Bell, 1971; Watson, 1967; Sinclair, 1970,1973; Norton-Griffiths, 1973).
