296 HAWKS, EAGLES, AND KITES 



habits. It is to be distinguished in life from that species by its larger 

 size, which, even in the field, is noticeable, and by its call. The usual 

 note of the Red-tail is a long-drawn "squealing" whistle, which to 

 my ear suggests the sound produced by escaping steam. 



"Of 562 stomachs examined, 54 contained poultry or game birds; 

 51, other birds; 278, mice; 131, other mammals; 37, batrachians or 

 reptiles; 47, insects; 8, crawfish; 1, centiped; 13, offal; and 89 were 

 empty" (Fisher). 



337a. B. b. krideri Hoopes. KRIDER'S HAWK. Similar to Buteo b. 

 borealis, but with much more white in the plumage; the head sometimes 

 almost entirely white; the underparts only lightly streaked, and with the 

 band on the belly sometimes obsolete; the tail in the ad. pale rufous, gen- 

 erally without a terminal black band; in the im., pale rufous, or white, washed 

 with rufous, and with numerous blackish bars. <? W., 15'00; T., 9*50 



Range. Great Plains from Wyo., N. D., and Minn., s. to Nebr. and Mo , 

 and in winter to Wise., Ills., Tex., La., and Miss. 



SE. Minn., uncommon S. R. 



Nesting date, se. Minn., Apl. 22. 



337d. B. b. harlani (And.}. HARLAN'S HAWK. Ads. Upperparts 

 dark sooty fuscous, bases of the feathers more or less barred with grayish 

 or whitish and at times with some rusty; tail closely mottled with black, 

 fuscous, rufous, and whitish; underparts varying from white more or less 

 spotted across the belly to sooty fuscous. Im. Similar, but the tail barred 

 with blackish, grayish, rufous, or whitish, tipped with white. & L., about 

 19-00; W., 15'50; T., 8'25. 9L., about 21'00; W., 17'00; T., 9'25. 



Remarks. The status of this form has not been satisfactorily established. 



Range. Lower Miss. Valley and Gulf States, from La. to Ga. and Fla ; 

 casual in Colo., Tex., Kans., Nebr., Iowa, Ills, and Pa. 



Dr. William L. Ralph, in Bendire's "Life Histories of North Ameri- 

 can Birds" (p. 218), reports this species as not uncommon during the 

 winter in St. John's and Putnam Counties, Florida. He writes: "They 

 are exactly like the Red-tailed Hawks except in color, and their call- 

 note is the same, only being longer drawn out. The call of the latter 

 bird, as already stated, sounds like the squealing of a pig, or 'kee-ee-e,' 

 and that of Harlan's Hawk like 'kee-ee-ee-e-e-ee' ." 



The WESTERN REDTAIL (837b. B. b. calurus) has been recorded from 

 Illinois. 



Outram Bangs has described the breeding Red-tailed Hawk of southern 

 Florida, and probably of Cuba, as Buteo borealis umbrinus. It is "darker above 

 than Buteo borealis, the throat and middle of the belly marked with broad, 

 conspicuous striping and banding of deep chocolate-brown ; tail-feathers with 

 dark brown markings (the remains of bands) near the shafts." Owing to the 

 lack of material the A. O. U. Committee on Classification and Nomenclature 

 has deferred action on this proposed new race. 



339. Buteo lineatus lineatus (GmeL). (Fig. 50.) RED-SHOULDERED 

 HAWK. Ads. Upperparts dark grayish fuscous-brown, more or less edged 

 with rufous, ochraceous-buff, and whitish; four outer primaries "notched," 

 all barred with black and white; lesser wing-coverts rufous, forming a con- 

 spicuous "shoulder" patch; tail black or fuscous, with four or five white 

 cross-bars and a white tip; throat streaked with blackish; rest of underparttij 

 rufous or ochraceous-buff , everywhere barred with white or whitish. Im. 

 Upperparts much as in the adult; basal part of the primaries mostly ochra- 



