The Mantled Hawk is a rather large black and white hawk of Atlantic forests of eastern South America. It typically is found in hilly or mountainous areas, ranging from Alagoas and Bahia states in northeastern Brazil south to eastern Paraguay and Uruguay. It forms a superspecies with the widespread White Hawk (Leucopternis albicollis) and with the Gray-backed Hawk (Leucopternis occidentalis) of the Tumbesian region. The only similar sympatric species is the White-necked Hawk (Leucopternis lacernulatus), which is smaller and has a terminal black tail band and pale irides. The Mantled Hawk feeds on reptiles and amphibians, birds, and small mammals. The nest and breeding behavior of this species are undescribed.