About Spizaetus tyrannus (Wied-Neuwied, 1820)
The black hawk-eagle (scientific name Spizaetus tyrannus (Wied-Neuwied, 1820)) measures 58–70 cm (23–27.5 in) in length, and weighs approximately 900 to 1,300 grams (2.0 to 2.9 pounds). It has black plumage with variable patterns across its wings and body, plus white speckling in some areas. Its wings are barred and slightly elliptical in shape, and it has a long, narrow tail that is rarely fanned. Four grey bars on the tail and a white line that sits just above the eye are distinctive identifying features of the black hawk-eagle. When the bird is flying, its wings are noticeably broad and short, and its tail is usually held closed while in flight.
