THE NATURAL HISTORY SURVEY. . 93 



Hawk has darted viciously at his head as he was walking through 

 woods at Glen Ellyn. This would seem to indicate that the bird 

 was nesting near the locality. Mr. Robert Kennicott records* the 

 nesting of this Hawk within our a/ea. Mr. E. W. Nelson says :t 

 "Abundant during migrations; September 15th to October 30th, 

 and April 15th to May loth. A few remain to breed." 



The range of the Sharp-shinned Hawk includes the whole of 

 North America from Panama northward. It breeds quite 

 throughout the United States and northward. 



Accipiter cooperii (Bonaparte). Cooper's Hawk. 



Faloo cooperii Bonaparte, Ann. Lye. N. Y., II, 1826, 433. 

 Astur cooperi Bonaparte, Comp. List, 1838, 5. 

 Accipiter cooperi Gray, List B. Brit. Mus., Accipitres, 1844, 38. 

 Nisus cooperi Schleg., Rev. Ace, 1873, 73. 



Popular synonyms : Chicken Hawk. Blue Chicken Hawk. Swift 

 OB Blue Hawk ok Darter. Quail oe Blue Quail Hawk. 



A quite common summer resident, arriving early in March 

 and departing late in October. This species is very destructive 

 to young poultry, although, like other species of the Raptores, 

 it repays the farmer to some extent by destroying large numbers 

 of mice and other vermin. 



Cooper's Hawk breeds throughout its range which extends 

 from the southern portion of the British Possessions south to 

 Central America. 



Accipiter atricapillus (Wilson), American Goshawk. 



Falco atricapillus Wilson, Amer. Orn., VI, 1812, 80, pi. 52, fig. 3. 



Astur atricapillus Jabd. & Selbt, Illust., 1825, pi. 121. 



Astur palumbarius var. atricapillus Ridgway, Proc. Bost. Soc, XVI, 



1874, 57. 

 Accipiter atricapillus Seebohm, Brit. Birds, I, 1883, iv. 

 Popular synonym : Chicken Hawk. 



This Hawk may be considered an exceedingly rare winter 

 resident. March 30, 1889, I captured an adult male at Beverly 

 Hills. This is the only recent record I know of regarding the 

 appearance of this species within our limits. Mr. E. W. Nelson 

 says :t "Formerly a common winter resident ; now very rare. 

 Dr. A. L. Marcy of Evanston, found them quite plentiful during 

 the winter of 1870-1871, and obtained specimens. The only time 

 I ever saw the birds alive, was the 3rd of May, 1876, at Wauke- 

 gan, when a fine adult specimen passed slowly overhead and dis- 



♦Trans. Illinois State Agri. Society, Vol. I, 1853-1854, 581. 



■(■Birds of I^ortheastern Illinois. Bull, of the Essex Institute, Vol. VIII, 1876, 118. 



