Abstract
The results of recent archeological research in the Loita‐Mara area of Kenya offer new information on the timing and process of the development of pastoralism in East Africa. They suggest that a pattern of specialized pastoral production, similar to that of contemporary East African pastoralists such as the Maasai, was present in parts of East Africa 2,000 years ago. It may have developed as a result of new opportunities for increased pastoral production. A bimodal pattern of rainfall with a short dry season, similar to the modern climatic regime, appeared about 3,000 years ago, which allowed year‐round milk production from cattle herds. The development of pastoralism in East Africa preceded agriculture and took place in a social and economic context of relationships between hunter‐gatherers and pastoralists. Environmental opportunity, combined with cultural competition, may have provided the impetus toward pastoral specialization.