NORTH AMERICAN GULLS AND THEIR ALLIES. 



35 



Tomales Point, May 24, 1884 (specimens in U. S. National Museum). 

 Eggs and young were found at Otter Rock, Greg., June 29, 1899 



Fig. 16. — Western gull (Larus occidcntalis), adult in summer plumage. 



(Prill), and on the islands near Lapush, Wash., June 21, 1897 (Young). 



The species winters commonly in Shoalwater Bay, Wash., and is not 



rare at this season north to 

 Vancouver Island, British 

 Columbia (Mayne). It also 

 winters along the whole 

 Pacific coast of the United 

 States and Lower California 

 and was abundant at the 

 head of the Gulf of Califor- 

 nia, November 25 to Decem- 

 ber 15, 1898 (Price), and 

 February and March, 1905 

 (Stone). 



The species was taken 

 once at Socorro Island, Mex- 

 ico (Anthony), and once, 

 September 30, 1889, at 

 Loveland, Colo. (Osburn). 



[SIBERIAN GULL. 



Larus affinis Reinhakdt. 



Though normally an inhabitant 



of the Eastern Hemisphere, the 

 Fig. 17.— Siberian gull (Larus affinis). """" .. „ ... 



Siberian gull was originally de- 

 scribed from a wanderer to Nenortalik, in the Julianehaab district of southwestern 

 Greenland. This species breeds regularly in northern Russia and Siberia from the 

 Dwina to the Yenesei, and winters south to western India and northern Africa.] 



