68 . FALCONIDA, 
In many parts of Canada and the United States the Red-shouldered Buzzard is 
common, and its habits are similar to those of the Red-tailed Buzzard (B. borealis). 
Like the last-named species, it seldom attacks poultry, but feeds largely on mice and 
other small mammals, reptiles, frogs, and insects. The nest is smaller than that of 
B. borealis, and consists of twigs with a lining of leaves. The eggs are usually three 
in number, but four, five, and six are occasionally found °. 
It breeds on the coast of Oregon southward to Lower California. 
Section D. Minores. Ale remigibus externis tribus in pogonio interno excisis. 
9. Buteo swainsoni. 
Falco buteo, Aud. Birds N. Am. t. 372 (nec Linn.)’. 
Buteo swainsoni, Bp. Comp. List, p. 37; Cassin, in Baird’s Birds N. Am. p. 19, t.13°; Dugés, La 
Nat. i. p. 188*; Salvin, Ibis, 1875, pp. 372, 377 >. Herrera, La Nat. (2) i. pp. 176, 320°; 
—Bendire, Life Hist. N. Amer. Birds, p. 236, t. 8. ff. 1-6"; Cherrie, Auk, 1892, p. 328°; 
Fisher, Bull. U. 8S. Dep. Agr. no. 3, p. 72, t. 9°; Allen, Bull. Amer. Mus. Nat. Hist. v. 
p. 347°; A. O. U. Check-i. N. Amer. Birds, 2nd ed. p. 182 ", 
Buteo insignatus, Cassin, Birds Cal. & Texas, p. 102, t. 31 2. Scl. P. Z. S. 1856, p. 285%; Sel. & 
Salv. Ibis, 1859, p. 216”. 
Buteo obsoletus, Sharpe, Cat. Birds Brit. Mus. i. p. 184 (nec Gm.)”. 
Buteo albonotatus, Lawr. Ann. Lyc. N. Y. ix. p. 183 (nec Gray) ™. 
Saturate brunneus, tectricibus alarum dorso concoloribus; remigibus nigris, intus cinerascentibus, fasciis 
nigris indistincte indicatis ; supracaudalibus lateralibus albo nigroque fasciatis, et rufo tinctis; rectricibus 
cinerascenti-brunneis, anguste albo terminatis, et fasciis 10-11 nigricantibus notatis, fascia obscura 
subterminali latiore; loris albicantibus; facie laterali nigricanti-brunnea; genis nigris; gula pure alba, 
anguste nigro striata ; gutture imo, prepectore et pectore summo cinerascenti-brunneis, rufo adumbratis ; 
pectore imo et gastreo reliquo albicantibus, fasciis aut maculis sagittiformibus brunneis vel cinnamomeis 
notatis ; subcaudalibus fere immaculatis ; rostro nigricanti-plumbeo, mandibula flavicante ; cera et pedibus 
flavis, unguibus nigris; iride brunnea. Long. tota circa 17-5, ale 14-6, caude 6°8, tarsi 2:5. (Descr. 
femine ex Duenas, Guatemala. Mus. nostr.) 
3. Femine similis, sed plaga prepectorali cinnamomea nec brunnescente; gula omnino alba. Long. tota 
circa 18°0, ale 15:2. (Descr. maris ex Long Coteau River, Dakota. Mus. nostr.) 
3 juv. Brunneus ; loris, fronte basali et superciliis albis ; capite et cervice fere albis, brunneo longitudinaliter 
striatis : subtus albus, prepectoris lateribus brunneo maculatis, pectore ipso anguste brunneo striolato ; 
hypochondriis brunneo fasciatim notatis. Ala 14:9. (Deser. maris ex Baltazar, Puebla. Mus. nostr.) 
Hab. Western N. America, from Wisconsin, Illinois, Arkansas, and Texas to the 
Pacific coast, north to the Arctic regions'!4.— Mexico (Sallé}*), Fronteras 
(F. Robinette !), Guanajuato, Guadalajara (Dugés*), Valley of Mexico (Herrera ®), 
San Baltazar in Puebla (Ferrari-Perez) ; Guatemaua, Duefias (0. S.1*); Costa Rica, 
San José (Carmiol 1°, Cherrie*),'Tucurriqui (Arcé).—Soutn AMERICA generally, from 
Colombia to Patagonia 1°, Masafuera I.°. . 
The variations in plumage undergone by this species are remarkable. The adult 
males may be distinguished by their cinnamon-coloured chest, as figured by Dr. A. K. 
Fisher 2. The females are rather larger, and have a darker under surface than the 
