Body measurements (in mm (mean ± SD [n])) of adult Red-Tailed Hawks -- various subspecies.

(a)From specimens in Denver Museum of Natural History, American Museum of Natural History, Field Museum of Natural History, University of Kansas Museum of Natural History.
(b)From point of insertion to tip of central retrices.
(c)Unflattened wing.
(d)From tibiotarsus-tarsometatarsal joint to base of middle toe.
(e)From anterior edge of cere to tip of mandible.
(f)Middle toe without claw.

	Male					Female
Subspecies (a)	Tail (b)	Wing chord (c)	Tarsus (d)	Culmen (e)	Toe (f)	Tail	Wing chord	Tarsus	Culmen	Toe
B. j. alascensis	227.6 ± 11.6 (8)	346.5 ± 13.4 (8)	86.9 ± 2.0 (8)	24.4 ± 1.1 (8)	43.6 ± 1.9 (8)	226.9 ± 7.4 (12)	360.5 ± 11.5 (12)	83.2 ± 2.3 (12)	26.4 ± 1.0 (12)	44.9 ± 1.9 (12)
B. j. harlani	211.0 ± 11.9 (33)	381.0 ± 16.4 (33)	79.8 ± 5.1 (33)	24.7 ± 1.4 (33)	41.3 ± 3.0 (33)	225.3 ± 17.1 (37)	408.7 ± 21.0 (37)	87.0 ± 4.7 (37)	27.0 ± 0.8 (37)	45.2 ± 1.9 (37)
B. j. calurus	224.2 ± 7.9 (31)	386.8 ± 11.4 (31)	85.4 ± 4.1 (31)	25.1 ± 1.1 (31)	44.0 ± 2.3 (31)	237.3 ± 11.3 (36)	412.0 ± 14.9 (36)	87.9 ± 3.7 (36)	27.3 ± 0.9 (36)	47.3 ± 1.9 (36)
B. j. kriderii	220.9 ± 13.0 (13)	378.9 ± 17.2 (13)	85.0 ± 2.6 (13)	25.6 ± 1.4 (13)	42.3 ± 1.9 (13)	237.0 ± 18.9 (9)	411.9 ± 20.1 (9)	87.9 ± 5.1 (9)	26.4 ± 1.9 (9)	46.5 ± 3.2 (9)
B. j. borealis	215.4 ± 19.1 (38)	370.1 ± 19.4 (38)	82.4 ± 3.1 (38)	25.1 ± 1.1 (38)	43.1 ± 2.0 (38)	230.1 ± 17.9 (38)	390.2 ± 20.0 (38)	85.0 ± 4.4 (38)	27.1 ± 2.1 (38)	46.8 ± 3.8 (38)
B. j. umbrinus	225.0 ± 13.1 (7)	398.8 ± 14.6 (7)	91.1 ± 5.2 (7)	27.2 ± 1.2 (7)	46.4 ± 2.4 (7)	234.0 ± 9.2 (7)	408.9 + 18.0 (7)	88.9 ± 6.1 (7)	30.0 ± 2.1 (7)	48.8 ± 2.9 (7)
B. j. fuertesi	210.9 ± 12.8 (17)	393.2 ± 16.4 (17)	88.0 ± 2.6 (17)	26.3 ± 0.8 (17)	46.0 ± 1.3 (17)	223.8 ± 11.2 (13)	430.7 ± 13.8 (13)	93.0 ± 2.8 (13)	27.5 ± 0.8 (13)	48.7 ± 1.6 (13)
B. j. fumosus	228.9 ± 15.1 (9)	369.3 ± 17.9 (9)	85.9 ± 1.8 (9)	27.4 ± 0.4 (9)	44.0 ± 2.3 (9)	235.0 ± 7.4 (10)	397.4 ± 7.8 (10)	88.3 ± 2.2 (10)	29.2 ± 0.7 (10)	47.0 ± 1.9 (10)
B. j. socorroensis	214.1 ± 11.7 (3)	378.4 ± 16.1 (3)	84.9 ± 2.4 (3)	24.9 ± 0.6 (3)	43.0 ± 1.2 (3)	228.4 ± 7.9 (5)	412.8 ± 18.1 (5)	89.1 ± 3.3 (5)	28.6 ± 1.0 (5)	48.0 ± 2.1 (5)
B. j. hadropus	215.0 ± 12.4 (7)	378.4 ± 16.1 (7)	89.1 ± 5.0 (7)	26.3 ± 1.2 (7)	46.8 ± 4.1 (7)	230.4 ± 11.0 (7)	401.1 ± 14.2 (7)	88.0 ± 4.9 (7)	26.8 ± 1.4 (7)	49.8 ± 4.0 (7)
B. j. kemsiesi	212.5 ± 6.3 (3)	376 ± 8.9 (3)	87.8 ± 2.8 (3)	26.1 ± 0.7 (3)	44.9 ± 1.9 (3)	231.0 ± 6.8 (3)	398.2 ± 10.0m (3)	87.1 ± 2.4 (3)	26.4 ± 0.8 (3)	46.9 ± 1.7 9(3)
B. j. costaricensis	213.2 ± 7.9 (11)	372.7 ± 14.0 (11)	88.6 ± 3.1 (11)	26.0 ± 2.0 (11)	44.3 ± 3.1 (11)	230.0 ± 16.1 (13)	401.9 ± 21.0 (13)	86.9 ± 4.1 (13)	26.6 ± 2.0 (13)	46.2 ± 2.9 (13)
B. j. jamaicensis	194.8 ± 6.8 (8)	334.9 ± 9.8 (8)	81.3 ± 4.4 (8)	26.1 ± 1.4 (8)	43.2 ± 3.7 (8)	210.0 ± 14.6 (11)	364.9 ± 15.9 (11)	83.4 ± 3.7 (11)	28.2 ± 0.8 (11)	45.2 ± 3.2 (11)
B. j. solitudinus	221.2 ± 7.4 (6)	370.0 ± 11.0 (6)	88.5 ± 2.4 (6)	27.2 ± 0.3 (6)	45.3 ± 1.8 (6)	251.8 ± 6.9 (9)	405.4 ± 12.1 (9)	88.3 ± 1.8 (9)	29.8 ± 0.4 (9)	45.7 ± 2.0 (9)