The white-rumped hawk (Parabuteo leucorrhous) is a species of bird of prey in subfamily Accipitrinae, the "true" hawks, of family Accipitridae. It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru, and Venezuela. Taxonomy and systematics The white-rumped hawk was previously placed in the large genus Buteo but a 2009 paper provided the evidence to move it to genus Parabuteo, joining Harris's hawk (P. unicinctus) there. An earlier proposal to place it in the resurrected genus Percnohierax was not accepted. The white-rumped hawk is monotypic. Description The white-rumped hawk is long with a wingspan. One male weighed and one female . Males and females have the same plumage. Adults are almost entirely black but with the namesake white rump and undertail coverts. Their tail has a narrow grayish-brown band at its midpoint and their thighs are feathered rufous. Their eye, cere, legs, and feet are yellow. Immatures have brown upperparts with rufous mottling and heavily mottled rufous underparts. Distribution and habitat The white-rumped hawk has two separate ranges. One is from the Andes and other mountains of Venezuela and Colombia south in the Andes through Ecuador into Peru, Boliva, and northwestern Argentina. The other range is from southern Brazil through Paraguay into northeastern Argentina. The species inhabits the interior and edges of dense subtropical and tropical forest and also the Chaco in the east. In elevation it mostly occurs between in Colombia, between in Peru, and up to in Bolivia. It occurs at lower elevations in its eastern range. Behavior Movement The white-rumped hawk is generally sedentary but there is evidence that it is somewhat nomadic. Feeding The white-rumped hawk's hunting methods and diet are mostly unknown. It has been documented feeding on reptiles, frogs, insects, and rats. Breeding The white-rumped hawk's breeding season appears to vary geographically, spanning at least February and March in Colombia and possibly June to January in Ecuador, and including October in Brazil. One described nest was a shallow cup of sticks lined with green leaves placed above the ground in a pine tree. It contained two eggs. Vocalization The white-rumped hawk's call is "a high-pitched whistle" with some variations such as "KEEEEiu" and "a longer, more monotonous high-pitched whistle". Status The IUCN has assessed the white-rumped hawk as being of Least Concern. It has a large range, but its population size is not known and is believed to be decreasing. No immediate threats