LIFE HISTORIES OF NORTH AMERICAN DIVING BIRDS. 19 



southern Labrador, southwestern New Brunswick (St. Croix Eiver 

 and St. Andrews), probably parts of Quebec and Ontario, central 

 western Minnesota (Grant County) and North Dakota (Turtle 

 Mountains and Sweetwater Lake). West to northwestern Montana 

 (Swan Lake), central northern Washington (Okanagan and Chelan 

 Counties) and northwestern Alaska (Selawik Lake, coast of Nor- 

 ton Sound and Yukon Eiver). North to northeastern Siberia 

 (Saghalin Island and Marcova and Gichiga, Anadj^r District), 

 Yukon Territory (Forty Mile) and northern Mackenzie (Fort 

 Anderson, Nahanni Eiver, and Peel Eiver). 



Occasional in summer south of its breeding range. New Jersey 

 (Englewood, June), New Hampshire (Kingston and Newton, birds 

 seen from May 15 to August 5, with young Julj^ 2 to August 1) and 

 Washington (Bellingham Bay). Maine breeding records are con- 

 sidered erroneous and Labrador nestings are open to doubt. 



Winter range. — Mainly on the Atlantic and Pacific coasts. From 

 eastern Maine (Washington County) and west central New York 

 (Cayuga Lake) south to North Carolina; casually to Georgia (St. 

 Marys) and Tennessee (Eeelfoot Lake). From southern British 

 Columbia (Okanagan Lake and Vancouver Island, A^ictoria) and 

 western Washington (Puget Sound region) south to southern Cali- 

 fornia (Santa Barbara). Also on the Great Lakes: Lake Ontario 

 (Toronto), Lake Erie (Near Ashtabula, Ohio), Niagara Falls and 

 Lake Michigan (near Chicago, Illinois). Wintering records from 

 the interior are few and unsatisfactory. Eecorded in winter from 

 the Pribilof Islands (St. Paul), Aleutian Islands (Unalaska), Ko- 

 diak Island, and Japan. 



Spnng migration. — Along the Atlantic slope the birds start 

 northward in April. Pennsylvania : Warren, April 18. New York : 

 April 21 to May 30. Connecticut: Long Island Sound, May 3 

 (latest). Ehode Island: May 2 (latest). Massachusetts: May 24 

 (latest). Maine: April 24. Hudson Strait: June 20 (arriving). 



On the Pacific coast and through the interior late in April or 

 early in May. British Columbia: Douglass, April 20 to May 10. 

 Southeastern Alaska: Forrester Island, May 3 to 10; Kuiu Island, 

 April 25 to May 6; Admiralty Island, May 7; Heceta Island, May 

 24. Western Alaska: Bristol Bay, May 30. Indiana: Park Side, 

 April 29. Michigan: Greenville, March 12. Ontario: Toronto, 

 April 24 to May 1; Lake Nipissing, May 10. Alberta: Edmonton, 

 May 10; Lily Lake, May 13 and 14. Mackenzie: Fort Providence, 

 May 25. 



Fall migration. — Southward along both coasts and through the 



interior. Mackenzie: Blackwater Eiver, October 8. Northwestern 



Alaska: St. Michael, September 22 to October; Kuskokwim Eiver, 



October 10; Nushagak, October 12. Commander Islands: Novem- 



55916— 19— Bull. 107 3 



