176 NORTH AMERICAN FAUNA 61, FISH AND WILDLIFE SERVICE 



A. K ^J&2¥ 



Figure 31. — Black-legged kittiwakes. 



are nesting colonies on Chagulak, Amukta, Koniuji, Buldir, 

 Unalga, Alaicl (of the Semichi group), Agattu, and Attu. There 

 were at least 2 colonies on Attu Island ; 1 of them was on Wrangell 

 Cape, which is the westernmost point in the Aleutians. There 

 were at least 3 colonies on Agattu, 1 of which contained 300 to 

 400 birds. 



An interesting observation was made in regard to the colonies 

 on Attu and Agattu, where we noticed a number of birds in 

 immature plumage perching on points near the nesting pairs. 

 Because of the time of year (too early for full-grown young) , 

 these birds must have been 1-year-olds that were lingering about 

 their birthplace. 



Rissa brevirostris: Red-legged Kittiwake 



Aleut: Gagdyax (Larus brevirostris Jochelson) 



Russian, Commander Islands: Krasno-nogaja gavaruschka (Stejneger) 



Clark (1910) reported that "The red-legged kittiwake was 

 seen in small numbers at sea near Unalaska, but became more 



