BLACK GUILLEMOT; SEA PIGEON 
27. Cepphus grylle. 13 inches. 
These birds are very abundant about the rocky islands 
from Maine northward. They may be seen sitting in 
rows on the edges of the rocks, or pattering along. the 
water as they rise in flight, from its surface, at a boat’s 
approach. In summer “the plumage is entirely black, 
except the large white patches on the wings; legs red; 
eyes brown. This species has the bases of the greater 
coverts black, while they are white in Mandt Guillemot 
(C. mandtii—No. 28), which is found from Labrador 
northward. In winter, these birds are mottled gray and 
white above, and white below, but the patches still show. 
Notes.—A shrill, piercing, squealing whistle. 
Nest.—Guillemots lay two eggs upon the bare rock or 
gravel in crevices or under piles of boulders where they 
are difficult to get at. They are grayish or ereenish- 
white, beautifully and heavily Bietehed with black and 
brownish (2.40 x 1.60). 
Range.—Breeds on coasts of North Atlantic from ~ 
Maine northward; winters south to Long Island. 
