SPECIES

Red-tailed Hawk Buteo jamaicensis Scientific name definitions

C. R. Preston and R. D. Beane
Version: 1.0 — Published March 4, 2020
Text last updated May 20, 2009

Tables and Appendices

Appendix 1

Summary of Red-tailed Hawk clutch size data from selected regions of North America 1920–1968 (adapted from Henny and Wight 1972).

  • Henny and Wight 1972
  • (*)1 = CA; 2 = AZ, UT, se. NV; 3 = TX, OK, w. NM, se. CO, s. KS, w. AR, nw. LA; 4 = FL, s. GA, s. AL; 5 = OH, IL, IN, e. MO, se. IA, n. KY; 6 = PA, NJ, MD, DE, e. WV, se. NY, sw. MA, n. VA; 7 = OR, WA; 8 = se. ID, s. MT, sw. ND, nw. SD, n. WY; 9 = WI, MI, NY (all but se corner), VT, e. MN, s. ON, s. QB; 10 = s. BC, s. AB, s. SK.

Region (*)Mean Clutch SizeRange%1%2%3%4%5Sample Size
12.922–502559151231
22.622–4048439021
32.442–4058393036
42.112–308911009
52.572–3043570023
62.291–3659350017
72.962–50314619426
82.942–4011836018
92.721–4131635075
102.902–40305020020


Appendix 2

Nesting densities of the Red-tailed Hawk in various parts of its range.

Author(s)LocationAverage Density: km2 per nesting pair
Shelton 1971Ohio50.0
Misztal 1974Ohio43.0
Cornman 1973Ohio24.9
Kirkley and Springer 1980Ohio6.2
Craighead et al. 1969Michigan19.2
Gates 1972Wisconsin10.6
Orians and Kuhlman 1956Wisconsin7.3
Hagar 1957New York8.0
Johnson 1975dMontana8.0
Mcinvaille and Keith 1974Alberta7.5
Luttich et al. 1971Alberta7.0
McGovern and McNurney 1986Colorado5.7
McGovern and McNurney 1986Colorado2.0
Fitch et al. 1946bCalifornia1.3
Craighead et al. 1969Wyoming2.6
Snyder and Snyder 1991Puerto Rico1.6


Appendix 3

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.

MaleFemale
Subspecies (a)Tail (b)Wing chord (c)Tarsus (d)Culmen (e)Toe (f)TailWing chordTarsusCulmenToe
B. j. alascensis227.6 ± 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. harlani211.0 ± 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. calurus224.2 ± 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. kriderii220.9 ± 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. borealis215.4 ± 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. umbrinus225.0 ± 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. fuertesi210.9 ± 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. fumosus228.9 ± 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. socorroensis214.1 ± 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. hadropus215.0 ± 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. kemsiesi212.5 ± 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. costaricensis213.2 ± 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. jamaicensis194.8 ± 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. solitudinus221.2 ± 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)


Recommended Citation

Preston, C. R. and R. D. Beane (2020). Red-tailed Hawk (Buteo jamaicensis), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.rethaw.01