Harris's Hawk
Parabuteo unicinctus
This medium-large hawk is roughly intermediate in size between a peregrine falcon (Falco peregrinus) and a red-tailed hawk (Buteo jamaicensis). Harris's 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). These hawks have a brownish plumage, reddish shoulders, and tail feathers with a white base and white tip. 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.
ID text from Wikipedia, CC BY-SA 4.0
White-rumped Hawk
Parabuteo leucorrhous
The white-rumped hawk is 33 to 40 cm (13 to 16 in) long with a 67 to 79 cm (26 to 31 in) wingspan. One male weighed 290 g (10 oz) and one female 389 g (14 oz). 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. Voice: 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".
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Harris's Hawk and White-rumped Hawk.