BIRDS OF THE PACIFIC DISTRICT. 31 



Cooper, 1860. Not common, and observed only in the 

 colder months. 



Suckley, 1860. Quite common near Fort Steilacoom 

 latter part of summer and early autumn; quite scarce 

 during breeding season. 



British Columbia. John Fannin. Common summer 

 resident. 



Henshaw, 1879. A single specimen only, at the 

 Columbia River -in October. 



Camp Harney. Bendire. Rather rare at all seasons. 



Ridgway. Was observed only in the upper Humboldt 

 where it was common in September. 



26. Accipiter cooperi mexicanus (Swains.) WESTERN 

 COOPER'S HAWK. 



L. B. Tolerably common about San Diego in winter; 

 probably breeding in El Cajon ; April 26, a single pair. 



Volcan Mountains. W. O. Emerson. Seen February 

 28, March 17 and March 20, 1884. 



Volcan Mountains. F. E. Blaisdell. August 21 to 

 November 28, common. (1884). 



Agua Caliente, San Diego Co., Cal. F. Stephens. 

 One seen April 8, 1886. 



San Bernardino Valley. F. Stephens. Rare resident. 



Henshaw, 1876. In summer it is not often seen in 

 the lower districts, but will then be found to have re- 

 tired to the mountains. In the fall there appears to be 

 a very decided migration from the north. 



Cooper, 1860. A common species during the winter 

 months in all the wooded portions of the State. 



Alameda and Contra Costa counties. W. E. Bryant. 

 Rare winter visitant. 



Central California. L. B. Tolerably common in 

 winter in the valleys and foothills; a few breed in the 

 pine forest of Calaveras county, altitude 4,500 feet and 



