Newsgroups: sci.bio
Path: utzoo!rising
From: rising@zoo.toronto.edu (Jim Rising)
Subject: Red-tailed Hawk Subspecies
Message-ID: <1990Sep4.202601.2532@zoo.toronto.edu>
Organization: U of Toronto Zoology
Date: Tue, 4 Sep 90 20:26:01 GMT

According to Handbook of North American Birds (vol. 5) (ed. R. S.
Palmer, Yale Univ. Press, 1988)

borealis, breeds e. N.A., s. to peninsular Fla.
calurus, B. C. & Alta. s. to w. Neb, and into Mex (Chihuahua, Sonora. B. Cal.)
alascensis, Alaska s. to Vancouver I.
umbrinus, s. 3/5 of peninsular Fla., and Bahamas (?)
fuertesi, Kans., Mo., s. through e. Tex to Mex. (Nuevo Leon; Chihuahua)
solitudinis, Cuba & Isle of Pines
jamaicensis, Jamaica (why not?), Hispaniola, P. Rico
hadropus, highlands of Mex. (Jalisco s. to Oaxaca)
kemsiesi, Chiapas, Guatemala, Honduras, ElCalvador, n. Nicaragua.
costaricensis, Costa Rica (you guessed it!) & n. Panama
fumosus, Tres Maris Is, off Nayarit, Mex.
socorroensis, Socorro Is., off tip of Baja Cal., Mex.

Interestingly, "Krider's" and "Harlan's" hawks (red-tails., s.l.)
are not considered to be subspecies by Palmer, but rather color
variants.  Harlan's breed in Alaska and Yukon, and hence are probabaly
alascensis/calurus; Krider's breed (maybe) in s. Canada (w. Ontario
to Alta., and Minn, w. Neb, Colo., Wy, and Mont.  -- i.e. a part of calurus.

Hope this is of some help, and not to tedious for most of the readers.
-- 
Name:     Jim Rising
Mail:     Dept. Zoology, Univ. Toronto, Toronto, Ontario, Canada    M5S 1A1
UUCP:     uunet!attcan!utzoo!rising 
BITNET:   rising@zoo.utoronto.ca