Red-shouldered Hawk
Buteo lineatus
Males are 38 to 58 cm (15 to 23 in) long and weigh on average 550 g (1.21 lb). Females are slightly larger at 47 to 61 cm (19 to 24 in) in length and a mean weight of 700 g (1.5 lb). The wingspan can range from 90 to 127 cm (35 to 50 in). Adult birds can vary in mass from 460 to 930 g (1.01 to 2.05 lb). Among standard measurements, the wing bone is 28–35 cm (11–14 in) long, the tail is 16–24 cm (6.3–9.4 in) long and the tarsus is 7.5–9 cm (3.0–3.5 in). Adults have brownish heads, reddish chests, and pale bellies with reddish bars.
ID text from Wikipedia, CC BY-SA 4.0
Red-tailed Hawk
Buteo jamaicensis
The red-tailed hawk is dimorphic in size, as females are up to 25% larger than males. As is typical in large raptors, frequently reported mean body mass for red-tailed hawks is somewhat higher than expansive research reveals. Part of this weight is highly seasonally variable and due to clinal variation; male red-tailed hawks may weigh from 690 to 1,300 g (1.52 to 2.87 lb) and females from 900 to 2,000 g (2.0 to 4.4 lb). Voice: The cry of the red-tailed hawk is a two- to three-second, hoarse, rasping scream, described as kree-eee-ar, that begins at a high pitch and slurs downward. This cry is often described as sounding similar to a steam 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: Red-shouldered Hawk and Red-tailed Hawk.