JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 471 



This fine Hawk appears to be of accidental occurrence in Illinois. 

 Dr. Coues saw one in Illinois a few miles east of the Mississippi River 

 (Bull. Nutt. Orn. Club, 1877, p. 26). Kumlien and Hollister record 

 three specimens taken in Wisconsin, two at Lake Koshkonong on 

 November 10, 1893, and another in October, 1894. Nelson (Birds 

 N. E. 111., 1876, p. 151) gives it as having been observed by Dr. Coues 

 on the Illinois side of the Mississippi River near Rock Island, in the 

 autumn of 1876, and undoubtedly refers to the single specimen 

 observed by Dr. Coues mentioned in his note in Bull. Nutt.- Orn. Club, 

 1877, previously mentioned. W. W. Cooke records a specimen 

 taken by Mr. Bolmer at Paris, 111., on January 19, 1886, and states 

 that it "has been found nesting at Vermillion, Dakota, and Grinnell, 

 Iowa." (BirdMigr. Miss.Val., 1888, p. 117.) 



164. Archibuteo lagopus sancti-johannis (Gin EL.). 

 AMERICAN ROUGH-LEGGED HAWK. 



Distr. : North America, from Gulf states northward; breeds chiefly 

 north of the United States. 



Light phase, adult: Four outer primaries, notched; entire front of 

 tarsus, thickly feathered; upper plumage, dark brown, the feathers 

 margined with tawny buff and buffy white; primaries, grayish brown, 



American Rough-leiged Hawk. 

 (Dark phase.) 



