BIRDS OF THE PACIFIC DISTRICT. 37 



Henshaw, 1879. Very numerous in summer in the 

 low, partially-wooded country near the mountains. I 

 noticed more of these hawks in northern California 

 than farther south, but this increase in numbers may 

 have been only apparent and due to their concentration 

 as fall approached. 



Camp Harney. Capt. Bendire. A common summer 

 resident, generally distributed. 



Hoffman. Frequently seen throughout the valleys, 

 and appears to be more common during the autumn 

 than B. calurus. Has also been obtained in the Colo- 

 rado valley from Fort Mojave northward. 



Ridgway. One of the most abundant of the large 

 hawks of the interior, but it seemed to be less common 

 in winter than in summer. 



32. Archibuteo lagopus sancti-johannis (Gmel.) AMER- 

 ICAN ROUGH-LEGGED HAWK. 



Cooper, 1870. This species is only a winter visitor in 

 California, as far as I know, and I have not seen them 

 south of Santa Clara valley, though I think some may 

 breed in the high mountains, as they are seen at the 

 Columbia River in July. 



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

 A rare winter visitant; one specimen taken at Berkeley. 



Central California. L. B. Tolerably common winter 

 visitant; it may breed in the mountains, but I have no 

 evidence that it does so. 



Cooper, 1860. In October I found a large number 

 near the seacoast; some remained all winter, and I 

 think a few build near the mouth of the Columbia, 

 where I saw young birds in July. 



British Columbia. John Fannin. Summer resident; 

 not common. 



Henshaw, 1879. Common in fall in marshy locali- 

 ties. 



