Register of predation upon species of reptiles by Guira guira (Aves: Cuculidae)

Abstract

Although we have a good understanding of how predation can influence community structure, we still have little information about how predation by visually oriented birds can be a significant source of mortality for reptiles. We observed adults of Guira guira feeding their offspring with four different species of reptiles, namely Amphisbaena vermicularis, Copeoglossum nigropunctatum, Iguana iguana and Tropidurus torquatus. It is the first report of G. guira predation on A. vermicularis and C. nigropunctatum. Although G. guira has been recognized as insectivorous, we believe that predation of small cryptozoic reptiles is a common event during bird breeding season.Keywords: Amphisbaena vermicularis, Copeoglossum nigropunctatum, cryptozoic reptiles, predation strategy, Pantanal.