The Harris’s Hawk, or Parabuteo unicinctus, a popular bird in falconry, is a medium-large bird of prey that’s widely found in the Americas, from the southwestern United States south to Chile and central Argentina.
This medium-large hawk is roughly intermediate in size between a peregrine falcon (Falco peregrinus) and a Red-tailed hawk (Buteo jamaicensis). Harris’ hawks range in length from 46 to 59 cm (18 to 23 in) and generally have a wingspan of about 103 to 120 cm (41 to 47 in).
They exhibit sexual dimorphism with the females being larger by about 35%. In the United States, the average weight for adult males is about 701 g (1.545 lb), with a range of 546 to 850 g (1.204 to 1.874 lb), while the adult female average is 1,029 g (2.269 lb), with a range of 766 to 1,633 g (1.689 to 3.600 lb).
They have dark brown plumage with chestnut shoulders, wing linings, and thighs, white on the base and tip of the tail, long, yellow legs and a yellow cere. The vocalizations of the Harris’s hawk are very harsh sounds.