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Figueroa Rojas,Ricardo A.; Corales Stappung,E. Soraya; Alvarado O.,Sergio. |
The diet of Red-backed Hawk (Buteo polyosoma) was quantified by analyzing 40 pellets collected during winter and spring 1999 and winter 2000 in a forested area of Aysén, Chilean Patagonia. Rodents were the most numerous prey (82% of all prey), and accounted for the highest contribution to total biomass (83%). Among rodents, Oligoryzomys longicaudatus was the most consumed prey species, accounting for 70% of total number and 64% of total biomass. Birds accounted for less than 6% in number, but their biomass contribution was significantly higher (more than 15%). Insects constituted 12% in number, but less than 0.5% of total biomass. The Red-backed Hawk seemed to consume Oligoryzomys longicaudatus according to their field abundance. Also, it seemed to prey... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Buteo polyosoma; Chilean Patagonia; Diet; Oligoryzomys longicaudatus; Prey selection; Red-backed Hawk. |
Ano: 2003 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072003000100006 |
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