Notes on the ecology of the avifauna of Choré, Department of San Pedro, Paraguay

Abstract

We studied and compared the bird faunas of forest, cleared and marsh habitats at Choré. Department of San Pedro, Paraguay. Data on flock sizes. relative abundance and habitat use are summarized for 141 species of birds. Forest habitats were more species rich and unique than cleared or marsh habitats. The proportion of species belonging to foraging guilds varied between the different habitats. Gregarious species (mostly frugivores and carnivores) usually occurred in clearings and marshes. and were relatively more abundant than non-gregarious species. Forest birds occurred singly or in pairs. but often joined interspecific foraging flocks. The proportion of birds in relative abundance categories did not vary between different habitats or foraging guilds.