THE NATURAL HISTORY SURVEY. 95 



and the Dakotas to Minnesota, and south to Texas ; casual in Iowa 

 and lUinois." 



Buteo borealis calurus (Cass.). Western Bed-tailed Hawk. 



Buteo calurus Cass., Proc. Acad. Nat. Sci. Philadelphia, VII, 1855, 



281. 

 Buteo borealis var. calurus Ridgway, Bull. Essex Inst., V, 1873, 186. 

 Popular synonym : Black Eed-tail. 



The Western Red-tail is included in the fauna of our area 

 because of the following record, published by Mr. E. W. Nelson :* 

 "In my collection is a fine adult specimen of this variety obtained 

 near Chicago in April, 1873, by my friend Mr. C. H. Smith." 



The A. O. U. Check-list gives the following range for the 

 Western Red-tailed Hawk: "Western North America, from the 

 Rocky Mountains to the Pacific, south into Mexico ; casual east 

 to Illinois." 



Buteo borealis harlani (Audubon). Harlan's Hawk. 



Falco harlani AtTDUBON, Orn. Biog., I, 1830, 441, pi. 86. 

 Buteo lorealis harlani Ridgway, Auk. VII, April, 1890, 205. 

 Popular synonym : Haklan's Buzzabd. 



The only record I have of the occurrence of Harlan's Hawk 

 within our limits is that of a specimen which I purchased from 

 a hunter who had just shot it near Calumet Lake. This specimen 

 was captured October i, 1895. It was a female and was ex- 

 amined by Mr. George K. Cherrie, who pronounced it a juvenile 

 bird in the dark phase of plumage. 



The range of this Hawk, as given in the A. O. U. Check-list, 

 . includes the "Gulf states and lower Mississippi Valley, north 

 casually to Pennsylvania, Iowa, and Kansas; south to Central 

 America." 



Buteo lineatus (Gmelin). Eed-shouldered Hawk. 



Falco lineatus Gmelin, S. N., I, ii, 1788, 268. 

 Buteo lineatus Vieillot, Nouv. Diet. d'Hist. Nat., IV, 1816, 478. 

 Falco luteoides Nuttall, Man., I, 1832, 100. 



Popular synonyms: Hen Hawk. Chicken Hawk. Winteb Buz- 

 zabd. 



This species is one of our resident hawks, and is quite com- 

 mon during its migrations. It arrives about March 20th and 

 nests in April. It frequents the heavily timbered woods, prin- 

 cipally in the northern portion of both Cook and Dupage coun- 

 ties. It is the most common of the larger hawks, especially in 



♦Birds of Northeastern Illinois, Bull, of the Essex Institute, Vol. VIII, 1876, 119. 



