On the occurence of the Cattle Egret, Bubulcus ibis (Linnaeus) (Aves, Ardeidae), in Pernambuco, Brazil. The Cattle Egret, Bubulcus ibis (Linnaeus, 1758), originally from Mediterranean Europe and Africa, during the 20th century has spread out its range, also reaching the American Continent. This paper presents information on the occurrence and reproduction of Cattle Egret in Pernambuco, especially in the "Agreste" region. During expeditions to this region, between 2000 and 2003, were found three breeding colonies, one roosting place, and indications of another breeding site. Only one mixed heronry was found. A variable number of B. ibis was observed, while driving along different roads in the "Agreste", between May 2002 and April 2003. Movements of Cattle Egret's populations, which are unknown in Brazil, probably influenced this variation. In most cases, Cattle Egrets were observed foraging in association with cattle. The presence of the Cattle Egret in the "Agreste" of Pernambuco seems to benefits the cattle industry, but its occurrence might impacts the native fauna.
Agreste; colonization; foraging; heronries; impacts
