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Titolo:
CRESTED CARACARA FOOD-HABITS IN THE CAPE REGION OF BAJA-CALIFORNIA, MEXICO
Autore:
RODRIGUEZESTRELLA R; RODRIGUEZ LBR;
Indirizzi:
CTR INVEST BIOL NOROESTE,KM 1 CARR SAN JUAN COSTA LA PAZ 23000 BCS MEXICO
Titolo Testata:
The Journal of raptor research
fascicolo: 3, volume: 31, anno: 1997,
pagine: 228 - 233
SICI:
0892-1016(1997)31:3<228:CCFITC>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOUTH TEXAS;
Keywords:
CARACARA PLANCUS; CRESTED CARACARA; FOOD; BAJA CALIFORNIA; MEXICO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
R. Rodriguezestrella e L.B.R. Rodriguez, "CRESTED CARACARA FOOD-HABITS IN THE CAPE REGION OF BAJA-CALIFORNIA, MEXICO", The Journal of raptor research, 31(3), 1997, pp. 228-233

Abstract

The diet of the Crested Caracara (Caracara plancus) in the Cape region of Baja California, Mexico was studied by analyzing 195 pellets collected beneath 10 occupied nests in 1990 and recording prey brought to two nests containing young in 1990-91. Our results showed that CrestedCaracaras fed opportunistically on mammals (mainly lagomorphs), reptiles (mainly iguanas and snakes), carrion of domestic animals such as cattle and dogs, and invertebrates (mainly Coleoptera and Orthoptera). The caracaras' ability to kill live prey was denoted both by the high frequency of reptile and bird remains in pellets, and by the high frequency of remains of recently killed birds, lizards and hares that werecarried to nests. Our observations at nests indicated that Crested Caracaras killed as much as 63% of vertebrate prey in pellets, while invertebrates may all have been captured alive. Numerically, live prey comprised about 88% of the diet of caracaras in the Cape region. In terms of ingested biomass, lagomorphs (both carrion and killed prey), reptiles (both, carrion and killed iguanas, snakes) and carrion of cattle,represented the most important food sources. We discuss the importance of slaughterhouses, henhouses and garbage dumps for young caracaras in the Cape region.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 10:55:08