FAUNA OF THE ALEUTIAN ISLANDS AND ALASKA PENINSULA 175 



records without further proof, and certainly this would be true 

 also of those seen in the Aleutians. 



Larus ridibundus: Black-headed Gull 

 Larus ridibundus sibiricus 



On June 4, 1937, Douglas Gray noted 3 strange gulls among the 

 glaucous-winged gulls in Kiska Harbor, at Kiska Island, and took 

 1 for a specimen. This was at first hastily identified as a Bona- 

 parte's Gull, but, on later examination, it proved to be L. r. 

 sibiricus, which is the only positive record for North America 

 (Muriel945). 



Rissa tridactyla: Black-legged Kit+iwake 

 Rissa tridactyla pollicaris 



Attu: Teegle-ah'-girch 



Atka: Teegle-gd-gha 



Eussian: Commander Islands: Gavaruschka, "on account of its loquacity" 



(Stejneger) 



Chukchi: Kakyttack (Palmen) 



The Pacific kittiwake can truly be said to occur throughout 

 the entire length of the Alaska Peninsula and the Aleutian chain ; 

 however, it nests only in suitable places. Gabrielson (1940) has 

 described the large colony at Resurrection Point, near Seward, 

 and he recorded two large colonies on Whale Island, near Kodiak. 

 The largest colony we observed was on Chisik Island, Cook Inlet. 

 Some estimates of the number of birds on Chisik Island ran as 

 high as 25,000 birds. At any rate, we judged this to be the 

 largest kittiwake colony that we observed on our trip, though 

 it may be rivaled by the Resurrection Bay and Whale Island 

 rookeries. 



We observed groups of these birds along both sides of Alaska 

 Peninsula, as far east as Bristol Bay on the north side. Cahalane 

 found them in some numbers in the Katmai region, and Hine 

 observed them at Katmai Bay in 1919 — though they did not 

 appear there until about August 10. Gianini (1917) reports a 

 small colony on a rocky islet in Stepovak Bay. Gabrielson found 

 them to be common in the Semidi Islands, and we found them in 

 the Shumagins. There is a colony on a rocky headland on Unga 

 Island. They nest in large numbers on Amak Island, and there 

 is a small colony on some cliffs at Cave Point, on the north 

 side of Unimak Island. 



We found the Pacific kittiwake in moderate numbers, with 

 occasional concentrations, throughout the Aleutian chain. There 



