BREEDING PERIODICITY, PRODUCTIVITY AND CONSERVATION OF THE MARTIAL EAGLE

Abstract

Hustler, K. & Howells, W. W. 1987. Breeding periodicity, productivity and conservation of the Martial Eagle. Ostrichss: 135-138. Twenty eight Martial Eagle territories were monitored from 1973-1984 in Hwange National Park, Zimbabwe, and 0,52 chicks were reared per breeding attempt. The eagles show an annual and biennial breeding periodicity which probably depends on the length of the post-nestling dependence period. We present two hypotheses on factors controlling this and discuss them in the light of data collected. The effects of agriculture on the post-nestling dependence period and on conservation of Martial Eagles are discussed.