2 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Range. — Breeds from northern California, North Dakota and northern 

 Wisconsin north to British Columbia and probably Manitoba. Winters 

 chiefly on the coast of California, casually to southern Alaska, rarely farther 

 east. 



Gavia adamsi (Gray). Yellow-billed Loon. [8.] 



Colymbus adamsii Gray, Proc. Zool. Soc. Lend., XXVII, 1859, 167 [Aug.]. 

 (Russian America through Bering's Straits = Alaska.) 



Range. — Breeds on the Arctic coast of Alaska (Pt. Hope, Pt. Barrow, Mint 

 River, and Salmon River), in the Mackenzie River delta, at Lake Lifton, 

 Hanbury River east of Clinton-Colden Lake, and on the Omolai River, 

 Siberia; occurs in summer on the Arctic coasts and islands of Siberia from 

 Novaya Zemlya and the Taimyr Peninsula eastward, and from Pt. Barrow, 

 Alaska, to the Boothia Peninsula; also on Great Slave Lake and Aylmer Lake, 

 Mackenzie. Winters on the coast of Norway, and in migrations reported to 

 occur casually in Great Britain, Finland, Japan, and China; on the Caspian 

 Sea; also on Admiralty Island, Nushagak, and Dixon Harbor, Alaska, and on 

 Vancouver Island. 



Gavia drctica pacifica (Lawrence). Pacific Loon. [10.] 



Colymbus pacificus Lawrence, in Baird, Cassin, and Lawrence, Rep. 

 Expl. and Surv. R. R. Pac, IX, 1858, liv, 887, 889. (San Diego, Cal. 

 and Puget's Sound = Presidio, near San Francisco, California.) 



Range. — Breeds on the Arctic coasts and islands from Pt. Barrow, Alaska, 

 to Melville Peninsula and Southampton Island, southern Baffin Island, and 

 casually farther, south to York Factory, Great Slave Lake, Athabaska Lake, 

 and the Alaska Peninsula; casual in summer (not breeding) at Monterey, Cal- 

 ifornia. Winters mainly on the Pacific coast of North America from south- 

 eastern Alaska and British Columbia to southern Lower California. Accidental 

 in Arizona, New Mexico, New Hampshire, and New York (Long Island). 



Gavia arctica viridigularis Dw^GHT. Green-throated Loon. [10a.] 



Gavia viridigularis Dwight, Auk, XXXV, No. 2, April 6, 1918, 198. 

 (Gichega [or Ghijiga], northeastern Siberia.) 



Range. — Coast of northeastern Siberia and occasional in western Alaska 

 (Pt. Barrow and Cape Prince of Wales), and at Victoria, British Columbia. 



[Another race, G. a. arctica Linnaeus, occurs in northern Europe but alleged 

 North American records of this form prove to be erroneous.] 



Gavia stellata (PoNTOPPiD an). Red-throated Loon. [11.] 



Colymbus stellatua Pontoppidan, Danske Atlas, 1, 1763, 621. (No locality 

 mentioned = Denmark.) 



