NORTH AMERICAN GULLS AND THEIR ALLIES, 
15 
the south end of Greenland, or that wanders to the eastern coast of 
Canada. 
Spring migration. — The first ivory gull arrived at Winter Harbor, 
May 24, 1820 (Parry), and on the northern coast of Prince Patrick 
Island, June 12, 1853 (M'Clintock). One appeared at Peterrnan Fiord, 
near the northeast point of Ellesmere Island, May 28, 1876 (Feilden). 
It appears to be not rare in migration at Point Barrow, Alaska, where 
• BREEDING 
O OCCURRENCE IN SUMMER 
Fig. 5.— Ivory gull (Pagophila alba). *' ° 
it was noted May 22, 1882 (Murdoch), and June 2, 1898 (Stone). 
Stragglers have been recorded from Godbout, Quebec, April, 1877, 
and March 7, 1906 (Comeau), and Sandwich Bay, Labrador, June 12, 
1897 (Dawson), while one of the few records for the Pribilof Islands, 
Alaska, is that of a specimen taken on St. Paul Island in the early 
spring of 1895 (Prentiss). 
The earliest eggs were found June 21, 1853, on Prince Patrick 
Island (M'Clintock), and the nesting season is so extended that eggs 
