Titre du document / Document title

Prey of breeding chilean hawks (Accipiter chilensis) in an Andean Nothofagus forest in northern Patagonia

Auteur(s) / Author(s)

FIGUEROA ROJAS Ricardo A. ; ALVARADO ORELLANA Sergio ; CORALES STAPPUNG Soraya ; SHEHADEH Ishback ;

Résumé / Abstract

We quantified the diet of the Chilean Hawk (Accipiter chilensis) by analyzing 495 prey remains collected during two breeding seasons (2001-2002 and 2002-2003) in an Andean Nothofagus forest of Nevados de Chillán, northern Patagonia. The diet was almost exclusively birds (97.8% of all prey remains), with relatively few rodents (1.6%) and insects (0.6%). At least 19 vertebrate species composed the prey remains (1 small mammal and 18 bird species), with Austral Thrush (Turdus falcklandii), White-crested Elaenia (Elaenia albiceps), Black-chinned Siskin (Carduelis barbata), Fire-eyed Diucon (Xolmis pyrope), and Thorn-tailed Rayadito (Aphrastura spinicauda) being the most common. All identified vertebrate prey are known to use forest habitats; 47% (n = 9) are forest specialists. Prey that inhabit both forest and shrublands accounted for 82% of the remains, and 18% of prey remains were of forest specialists. Our results indicate that during the breeding season, Chilean Hawks in Nevados de Chillán are pre-eminent, bird-eating predators that feed primarily on forest-dwelling birds.

Revue / Journal Title

The Wilson bulletin   ISSN 0043-5643   CODEN WILBAI 

Source / Source

2004, vol. 116, n^o4, pp. 347-351 [5 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Wilson Ornithological Society, Lawrence, KS, ETATS-UNIS  (1894) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 5181, 35400012706108.0100