SUMMARY.1The species of eagles occurring in Embu district are detailed, with general notes on the methods and scope of the study.2The vegetation and climate of Embu district are described, and their effect upon eagles is discussed.3Population and inter‐relations. The actual population of eagles and of the Secretary Bird in an area of approximately 146 sq. miles is given and their remarkable local concentrations are described. The inter‐relations of the various species are discussed from the points of view of territorial agressiveness and competition for prey.4Detailed accounts are given of the breeding biology ofSagittarius serpentarius, Aquila verreauxi, A. wahlbergi, Hieraaëtus spilogaster, Polmaëtus bellicosus, Stephano‐aëtus coronatusandCircaëtus cinereus, and some information forTerathopius ecaudatus, Circaëtus pectoralis, andAquila rapax, Hieraaëtus ayresi, Lophaëtus occipitalis, andCuncuma vocifer. The headings for each species include: “Nests and nest‐building”, “Incubation period”, “Fledging period” (with special attention to food), and “Post‐fledging period”.5The following special aspects of breeding behaviour are described and discussed: (1) Display, (2) Use of green branches, (3) Breeding seasons, (4) Breeding