First record of a successful reproduction of Chaco Eagle (Buteogallus coronatus) in Santa Fe Province, Argentina

Abstract

Chaco Eagle (Buteogallus coronatus) is a bird of prey of southern South America. Its populations are endangered because of, amongst other factors, habitat destruction, direct persecution, electrocution on power lines and drowning in water reservoirs. During the last years, data on territories, nests and successful reproductions of this species in Argentina have been concentrated at the southernmost part of its distribution area (western La Pampa and southern Mendoza). However, in Santa Fe province, considered as a priority for Chaco Eagle conservation, no successful reproductions have ever been registered. In this paper we record the discovery and monitoring of an active Chaco Eagle nest in Santa Fe province which eventually was successful. This finding demonstrates the necessity of establishing a long-term monitoring of Chaco Eagle populations in this province.