BIRDS OF NORTH AND MIDDLE AMERICA 287 



BUTEO LINEATUS ELEGANS Casain 



Western Red-shouldered Hawk 



Adult (sexes alike). — Similar to that of B. I. lineatus, but with the 

 fuscous-black centers of the feathers of the top of the head, nape, inter- 

 capulars, and scapulars narrower, the margin wider and brighter, 

 orange-cinnamon; the lesser upper wing coverts at the bend of the wing 

 almost wholly bright hazel, the dusky chaetura drab terminal shaft 

 spots much reduced in size; sides of head, chin, and throat more 

 cinnamomeous ; breast and upper abdomen more rufescent, deep cinna- 

 mon-rufous to hazel, and usually without any whitish bars; the rest 

 of the underparts more heavily barred with cinnamon to hazel, the 

 under tail coverts always broadly barred with cinnamon, the thighs 

 heavily barred with the same or hazel ; under wing coverts abundantly 

 and narrowly barred with hazel. 



Juvenal (sexes alike). — Similar to that of B. I. lineatus, but with the 

 feathers of the upperparts more widely edged with cinnamon, and 

 with the underparts more abundantly spotted and streaked with 

 fuscous, the spots smaller, but much more numerous, and extending 

 over the lower abdomen and under tail coverts as v/ell; thighs barred 

 with cinnamon. 



Natal down. — Similar to that of B. I. lineatus. 



Adult ma/e.— Wing 288-305 (299.2); tail 196-204.1 (200.4); cul- 

 men from cere 20.3-21.3 (20.7); tarsus 72-76.3 (74.1); middle toe 

 without claw 35-38.3 (36.1 mm.).''^ 



Adult Jemale. —Wmg2^S-?,l2 (302); tail 190-204 (196.2); culmen 

 from cere 20-22 (20.9); tarsus 75-78 (76.5) ; middle toe without claw 

 35-38 (36.8 mm.)^ 



Range. — ^Resident from eastern Oregon (Camp Harney), through 

 California (chiefly in the San Joaquin and Sacramento Valleys and 

 the San Diego lowlands: Escondido, San Onofre, Los Angeles, Santa 

 Paula, Palo Alto, Sonoma, etc.), south to northwestern Baja Cah- 

 fornia (San Rafael; Rosario), where rare. Formerly, or excep- 

 tionally, at least in w^inter, in northeastern Arizona (near Hol- 

 brook, Kayenta). 



Recorded, on doubtful basis, from British Columbia (Burrard 

 Inlet; Chilliwack). 



Type locality. — CaUfornia and New Mexico. 



Falco hy emails (not of Gmelin) Townsend, Journ. Acad. Nat. Sci. Philadelphia, 

 viii, 1839, 151 (nw. United States). 



Buteo lineatus (not Falco lineatus Gmelin) Gambel, Proc. Acad. Nat. Sci. Phila- 

 delphia, iii, 1846, 45 (California) ; Journ. Acad. Nat. Sci. Philadelphia, i, 

 1847, 26 (California).— Cassin, Proc. Acad. Nat. Sci. Philadelphia, vi, 1853, 



*^ Five specimens, all from California. 

 " Four specimens from California. 



