FAUNA OF THE ALEUTIAN ISLANDS AND ALASKA PENINSULA 159 



Stercorarius parasiticus: Parasitic Jaeger 



Attu: Klu-pa-soch 



Atka: Ke-uch 



Russian, Commander Islands: Rasbojyiik (Stejneger) 



Chukchi: UadV Ukangodlin (Palmen) 



The parasitic jaeger nests on Kodiak Island (Friedmann 1935; 

 Bent 1921), throughout the Alaska Peninsula, and along the 

 Aleutian chain. On May 23, 1936, 2 of these birds were seen in 

 outer Nushagak Bay; on May 25, 3 were seen, and, the next day, 

 2 were observed over the marshy tide flats at Snag Point, 

 Nushagak River. On May 27 and 29, a number of these birds 

 were seen flying about over the tide flats at Ugashik River — 

 both the light- and dark-color phases were noted. C. S. Williams 

 collected one in the light-color phase. On August 26, there were 

 five (all of which were in the light-colored phase) over the marsh 

 at Sand Point, Popof Island. 



On June 18, 1940, Gabrielson saw a pair at the Semidi Islands, 

 and on July 17, he saw three birds at Dillingham. On July 19, 

 he saw 12 parasitic jaegers on Naknek River. 



Jaques (1930) says the parasitic jaeger was "Common along 

 shore and over the tundra north of Port Moller, where it was 

 breeding in June." 



In 1925, I found these jaegers to be numerous about Izembek 

 Bay during the nesting season, and I suspected that they were 

 nesting, though proof was lacking. Wetmore reported these 

 birds "tolerably common" about Morzhovoi Bay, and Gianini 

 (1917) found them quite common about Stepovak Bay. 



We saw this bird frequently throughout the Aleutian chain. 

 They were in pairs, on characteristic tundra habitat, and they 

 acted in a manner typical of nesting. Unfortunately, we had no 

 time to hunt for nests. 



On June 12, 1936, 4 pairs of jaegers were found on Chuginadak 

 Island; June 14, 1 was seen on Herbert; June 18, a pair was seen 

 on Seguam; June 29, 3 were seen on Kanaga; July 23, 2 were 

 seen on Ogliuga ; July 26, several were observed on Kiska ; July 

 30, 3 were sighted on Attu; July 31, at least 21 were seen high 

 up on Buldir; August 4, 5 were seen on Kavalga and 3 were seen 

 on Skagul Island. 



In 1937, they were noted again : June 4 and 5, 6 were seen on 

 Kiska ; June 7 and 10, 4 were seen on Attu ; June 11 to 15, common 

 on Agattu; June 17, 6 were seen on Semichi; June 18, abundant 

 on Buldir; June 21, common on Kiska; June 22, a pair was 

 seen on Little Kiska; June 23, 3 were seen on Chugul ; June 27, 

 a pair was seen on Little Sitkin; June 30, at least 2 pairs were 



