Birds of four forest fragments in areas of extensive sugar-cane plantation were studied in Campos dos Goytacazes, northern Rio de Janeiro State, Brazil, from October 2000 to July 2001. The basic diet of sampled species and their trophic guild allocation were determined. The study was carried out by means of capture with mist nets, visual and auditive records and analysis of faeces. Forty-four species were recorded and grouped in eight trophic guilds (insectivores, granivores, carnivores, frugivores, piscivores, nectarivores, omnivores and carrion eaters). The species were also allocated into smaller guilds, associated to their habitats. Some species only fly over the fragments, as Egretta thula (Molina, 1782), while others are residents, as Manacus manacus (Linnaeus, 1766), and some used these fragments for nocturnal resting, as Amazona amazonica (Linnaeus, 1766). Small understory species apparently do not travel between fragments, given their relatively large spacing. Raptors, such as Rupornis magnirostris (Gmelin, 1789) live in both fragments and nearby open areas. Fragments in critical situation, supporting mainly generalists and/or edge species, still support some species with ecological interest, such as Rhynchocyclus olivaceus (Temminck, 1820) and A. amazonica.
Birds; forest fragments; guilds; sugar-cane; Rio de Janeiro
