EASTERN RED-TAILED HAWK 163 



and probably Bellingham) ; British Columbia (Beaver Creek, prob- 

 ably Cumshewa Inlet, and Porcher Island) ; and Alaska (St. Lazaria 

 Island, probably Yakutat, Cliitina River, Nusliagek, Iditarod River, 

 and Innoko River). 



The range as above outlined is for the entire species {B. jamaicen- 

 sis of some authors), which has, however, been separated into several 

 geographical races. True horeaUs occupies the greater part of this 

 vast area from Yukon, Mackenzie, Manitoba, and Quebec south to 

 Texas, Oklahoma, Arkansas, Alabama, and northern Florida. The 

 western redtail [B. h. calnrus) is found from Alaska and central 

 western Mackenzie south to Lower California and east to the edge 

 of the Great Plains. Krider's hawk {B. h. krideri) breeds from 

 south-central Canada, North Dakota, and Minnesota south in win- 

 ter to Louisiana and Mississippi ; accidental in Georgia and Florida. 

 Harlan's hawk (B. b. harlani) breeds in northwestern British Co- 

 lumbia, southeastern Alaska, and southwestern Yukon, wintering 

 south to the Gulf coast; casual in California. The Florida redtail 

 {B. h. umbrinus) is found in the Florida Peninsula, Cuba, the Isle of 

 Pines, and probably the Bahama Islands. Buteo h. jamaicensis occu- 

 pies Hispaniola, Jamaica, Puerto Rico, the Virgin Islands, and prob- 

 ably the Leeward Islands; B. i. fuviosus is found on the Tres Marias 

 Islands off the west coast of Mexico ; B. h. socorroensis is confined to 

 Socorro Island, also off the west coast of Mexico, and B. h. costari- 

 oensis is found from the highlands of southern Mexico south to 

 Costa Rica and probably western Panama. 



Winter range. — The species winters throughout the southern part 

 of its breeding range and north to southern British Columbia (Chil- 

 liwack and Okanagan) ; Utah (Provo) ; Colorado (Boulder) ; south- 

 eastern South Dakota (Vermillion) ; Iowa (Sioux City and Keokuk) ; 

 central Illinois (Rantoul) ; southern Michigan (Detroit) ; New 

 York (Rochester, Geneva, Auburn, and Rhinebeck) ; Connecticut 

 (Hartford); and eastern Long Island (Gardiners Island). It is 

 occasionally noted at this season and may sometimes winter north 

 to Alaska (Admiralty Island and Eagle) ; North Dakota (James- 

 town) ; Minnesota (Lanesboro) ; Wisconsin (Viroqua, Madison, and 

 Princeton) ; southern Ontario (Coldstream, London, Mill Brook, 

 and Ottawa) ; Vermont (Montpelier) ; New Hampshire (Meriden 

 and Monadnock) ; and Maine (Cumberland County). 



Spring migration. — Early dates of arrival in the spring are: 

 Maine — Lewiston, March 15; Portland, March lY; Auburn, March 

 20; and Avon, March 21. Quebec — Montreal, April 22. New 

 Brunswick — Scotch Lake, March 25 ; and St. John, March 27. Nova 

 Scotia — Wolfville, March 22. Prince Edward Island — North River, 

 April 20. Ontario — Toronto, February 14; Port Dover, February 

 26; and London, March 12. North Dakota — Larimore^ March 20; 



