100 NORTH AMERICAN FAUNA 61, FISH AND WILDLIFE SERVICE 



Bay on May 26, and we observed several on lower Ugashik River 

 on May 27 to 29. 



Jaques (1930) noted them as abundant in southeastern Alaska, 

 May 1 to 9, 1928, and saw a few about Port Moller, May 22 to 

 June 2, 1928. 



In 1925, I found them about the western end of Alaska 

 Peninsula: At King Cove, April 25; plentiful at False Pass, 

 April 28; a flock in Bering Sea near St. Catherine Cove (Unimak 

 Island), May 17; and a few near Izembek Bay, May 20. As 

 late as July 27 a few (possibly nonbreeders) were found along 

 the coast in the vicinity of Izembek Bay. 



We did not observe white-winged scoters in the Aleutians 

 west of Unimak Island, but Wetmore (manuscript notes) re- 

 ported "a great raft" of these birds at Tanaga Island, June 25, 

 1911, and he noted small flocks in Kiska Harbor, June 17-21, 

 1911 ; Gabrielson noted a few at Akun, July 9, 1941. 



A. C. Bent (1925) suggests that the species may possibly 

 breed in the Aleutians, basing his conjecture on these summer 

 observations. This is possible, not only in the Aleutians but 

 also on the peninsula, especially before the introduction of blue 

 foxes on the islands. However, we have no nesting records for 

 this entire district. 



According to general information and statements of natives, 

 white-winged scoters winter in large numbers in the Aleutians 

 and along the Alaska Peninsula. In 1941, Beals and Longworth 

 (field report) recorded these ducks at intervals from January 

 12 to June 12 in the region about eastern Unimak and the 

 adjacent Alaska Peninsula, and Gabrielson recorded wintering 

 birds from Kodiak to Unimak. 



Cahn (1947) writing of Unalaska Island, says: "An abundant 

 fall and winter visitor, especially from December to February." 

 And Taber (1946) found a few of these birds wintering at 

 Adak. Sutton and Wilson (1946) observed one scoter at Attu, 

 March 17, 1945. 



G. H. Mackay in 1891 (quoted in Bent 1925) gave an interesting 

 account of a mass migration of white- winged scoters to their 

 nesting grounds, as observed in Rhode Island. He stated that 

 it generally took place about the middle of May and that the 

 daily flight was begun in the afternoon. 



We observed a similar occurrence on the other side of the 

 continent when we visited Nushagak Bay in 1936. As we went 

 up this bay on May 23, we saw large numbers of white-winged 

 scoters assembled there, some of them flying about in pairs. 

 The following is quoted from our field report; 



