Abstract

VILLEGAS-DAVIES, Vanesa; FLORIA, Pía  and  CASAUX, Ricardo. Breeding and feeding of the Black-chested Buzzard-Eagle (Geranoaetus melanoleucus) at northwest Chubut, Argentina. Hornero [online]. 2018, vol.33, n.2, pp.113-119. ISSN 0073-3407.

In this work we make the first contribution on the breeding and feeding ecology of the Black-chested Buzzard-Eagle (Geranoaetus melanoleucus) in Chubut Province, Argentina. During the 2012-2013 breeding season three nests were located; we recorded the chronology and reproductive parameters, and counted and identified preys. The average clutch size observed was 2.3 eggs per nest. The hatching success was 100% for two of the nests and 50% for the other, the breeding success was 100% in the three nests and the average number of fledglings of 2 per pair. The permanence of the nestlings in the nest fluctuated between 9-12 weeks, a period longer than that described in other studies. The European Hare (Lepus europaeus) was the main prey and the recorded food spectrum was similar to that of previous studies.

Keywords : Accipitridae; European Hare; Exotic prey; Feeding habits; Nesting; Raptors.

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