Birds of Oregon and Washington 213 



THE GLAUCUS-WINGED GULL. 



Length, 22 to 27 inches. 



This is probably the most common of all the 

 Gulls in our harbors. 



DESCRIPTION. Mantle, average Gull-blue; in win- 

 ter, head and neck, clouded with dusky, not streaked as 

 in the American Herring Gull ; primaries, color of 

 mantle to very tips, marked with definite small white 

 spots ; first primary, with a large white sub-apical spot. 

 Bill, yellow with red spot. Feet, flesh color. 



Winter resident. 



THE AMERICAN HERRING GULL. 



Length, 22 to 27 inches. 



This bird is common to both the Pacific and 

 Atlantic coasts, in the winter season. 



DESCRIPTION. Mantle, pale dull blue; in winter, 

 head and hind neck, streaked with dusky ; primaries 

 (outer wing-feathers) , black ; bill, yellow with red spots ; 

 feet, flesh color. Same size and shape as the Glaucus- 

 winged Gull. 



Winter resident. 



THE RING-BILLED GULL. 



Length, 1 8 to 20 inches. 



The name indicates a distinction in this bird 

 which, however, it shares to some extent with 



