Family Hawks, Eagles (Accipitridae)

Least Concern

Slate-colored Hawk (Buteogallus schistaceus)


French: Buse ardoisée German: Schieferbussard Spanish: Busardo pizarroso

Asturina schistacea


, 1851,



This species and Cryptoleucopteryx plumbea previously placed in Leucopternis (see C. plumbea). Monotypic.


Amazonia from SE Colombia and SW Venezuela S through E Ecuador and E Peru to N & E Bolivia, and E to NE French Guiana and CN Brazil.

Descriptive notes

41–46 cm; one female 455 g; wingspan 85–96 cm. Dark leaden grey; blackish on head and wings; tail black, narrowly tipped white, with a bold white bar; underwing... read more


Most often heard call is a descending piercing whistle 'keeyuuu' with a somewhat... read more


Tropical lowland forest and forest wetlands from sea-level to at least 500 m elevation. Often along... read more

Food and feeding

Snakes, lizards, frogs, fish, crabs and insects reported. Observed following troops of squirrel monkeys (Saimiri sciureus) and... read more


No information available.


Presumably sedentary.

Status and conservation

Not globally threatened (Least Concern). CITES II. Generally fairly common. Status uncertain, but extensive range suggests there is no need for immediate concern; surveys... read more

Recommended citation

Bierregaard, R.O., Jr, Boesman, P. & Marks, J.S. (2020). Slate-colored Hawk (Buteogallus schistaceus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 24 February 2020).