Adult DescriptionMedium-sized to large hawk. Slaty black overall. Tail with two or three light bands. Underwings two-toned, with dark linings and paler flight feathers. Legs and skin on face yellow. Wings held up in slight V when soaring.
Immature DescriptionJuvenile slightly darker and more brownish than adult; often with white spotting on underparts and around head; tail with many narrow, blackish bands.