60 BULLETIN 107, UNITED STATES NATIONAL MUSEUM. 



May 4. Southern Alaska : Kuiu Island, April 25 to May 6 ; Admir- 

 ality Island, May 16; Bocadequadra, May 28. Northern Alaska: 

 Norton Sound, May 15 to 25 (arrival). 



Fall migration. — Southward mainly in September and October. 

 Greenland: Ivigtut, November 18 (latest). Labrador: Davis Inlet, 

 October 2 ; Battle Harbor, October 12. Rhode Island, September 15. 

 North Carolina : Fort Macon, arrives in September. South Carolina : 

 Arrives October IT to 27. Yukon Territory : Forty Mile, September 

 25. Mackenzie Eiver: Near Nahanni Eiver, leaves October 15. 

 Alberta: Lily Lake, September 24; Edmonton, October 30. Idaho: 

 September 25 to October 4. Nebraska: September and October. 

 Missouri : October 20 to November 20. Alaska : Norton Sound, leave 

 October 1; Wrangell Island, November 5; Shumagin Islands, Sep- 

 tember 2. Southern California : Pacific slope, arrives October 15. 



Egg dates. — Maine and New Hampshire: 28 records, June 2 to 

 August 10 ; 14 records, June 14 to 27. Ontario and Quebec : 12 rec- 

 ords. May 21 to July 12 ; 6 records, June 15 to 23. British Columbia 

 and Washington : 11 records, April 29 to May 2& ; 6 records. May 3 

 to 19. Michigan and Wisconsin: 11 records. May 7 to June 26; 6 

 records. May 20 to 28. Iceland and southern Greenland : 8 records. 

 May 29 to July 12; 4 records, June 4 to 19. Anderson River: 2 

 records, June 25 and July 3. 



GAVIA ADAMSI (Gray). 



YELLOW-BILLED' LOON. 



HABITS. 



This large and handsome diver is essentially a bird of the Arctic 

 coast. Few naturalists have ever seen it and very little is known of 

 its habits. It is one of the rare species about which I have hoped to 

 learn something new, but I regret to say that I have been unable to 

 add much to its life history beyond what has already been published 

 and that is meager enough. It seems to be fairly common, or even 

 abundant, along the Arctic coasts of northwestern North America 

 and eastern Siberia. 



Spring. — Mr. John Murdoch (1885) says of its appearance at Point 

 Barrow : 



They are firsst to be seen about the end of May, or early in June, at the " lead " 

 of open water and flying inland to their breeding grounds. As the sea opens 

 along the shore and open holes are found in the lagoons they are to be looked 

 for in such places, gradually going out to sea as the season advances. Fully 

 fledged young were seen August 7, 1883. The breeding grounds are probably 

 around the swamps and lakes some distance inland. 



Mr. John Koren, in his notes published by Thayer and Bangs 

 (1914), says: 



The yellow-billed loon is common along the Arctic coast of east Siberia. It 

 seems to prefer drift ice, and was very numerous between the mouth of the 



