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El hornero

versión impresa ISSN 0073-3407versión On-line ISSN 1850-4884

Resumen

VILLEGAS-DAVIES, Vanesa; FLORIA, Pía  y  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.

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

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