NORTH AMERICAN" GULLS AND THEIR ALLIES. 
31 
breeds on Iceland and south along the western coast of Europe to 
about latitude 50°. The principal summer home seems to be the 
Labrador coast, where it is an abundant breeder from Cape Chidley, 
Hudson Strait (Low), along the whole coast and south to Newfound- 
Fig. 13.— Great black-backed gull (Larus marinus). 
land (Arnold), Anticosti Island (Brewster), Godbout, Quebec (Co- 
meau), Pictou, Nova Scotia (Hickman), Halifax, Nova Scotia (Jones), 
and Kentville, Nova Scotia (Tufts). A few nonbreeders remain all 
summer on the Maine coast (Knight). 
