LIST OF THE BIRDS OF EASTERN NORTH AMERICA. 355 



A.^o^u, Genus ROSTRHAMUS. Lesson. 



264 (330) ROSTRHAmUS SOCIABILIS. (Vieill.) Everglade Kite. 



Central America and eastern South America ; common in South Florida 

 where it breeds. 



Genus CIRCUS. Lacepede. 



265 (331) CIRCUS HUDSONIUS. (Linn.) Marsh Hawk. 



North and Central America ; breeding throughout its range ; one of 

 the most common species in eastern United States ; frequenting 

 marshes. 



Genus ACCIPITER. Briss. 

 Subgenus ACCIPITER. 



266 (332) ACCIPITER VELOX. (Wils.) Sharp=shinned Hawk. 



North America ; breeding throughout its range ; in winter south to 

 Mexico and Central America ; common in eastern United States. 



267 (333) ACCIPITER COOPERI. (Boxap.) Cooper's Hawk. 



North America and Mexico ; breeds throughout its range ; common in 

 eastern United States. 



Subgenus ASTUR. LACiipfiDE. 



268 (334) ACCIPITER ATRICAPILLUS. (Was.) American Goshawk. 



Greater portion of North America, north of the Middle States ; breeds 

 from northern border of United States northward. 



Genus PARABUFEO. Ridgw. 



269 (335) PARABUTEO UNICINCTUS HARRISI. (Aud.) Harris's Hawk. 



Western species, which occurs in Louisiana. 



Genus BUTEO. Cuvier. 



270 (336) BUTEO BUTEO. (Linn.) European Buzzard. 



pAiropean species; once taken in United States; Michigan, one record. 



271 (337) BUTEO BOREALIS. (Gmel.) Red-tailed Hawk. 



Eastern North America and Canada ; south to Mexico ; breeds nearly 

 throughout its range. 



272 (337o) Buteo borealts kriderii. Hoopes. Krider's Hawk. 



Western race, which occasionally occurs as far east as Illinois ; differs 

 in being much paler; more white in the plumage; underparts, 

 faintly streaked. 



273 (3376) Buteo borealis cahims. (T^ass.) Western Red-tail. 



This race has been recorded from Illinois ; its true range is west of the 

 Rocky Mountains ; it differs in being much darker than borealis. 

 and shows more dusky and rufous brown in the plumage ; some 

 specimens are almost entirely black, with breast dark reddish 

 brown. 



