36 BLACK-AND-WHITE BIRDS. 



sea as if unable to fly. Like the Puffin, this bird is 

 au expert diver for fish and crustaceans. It also 

 attends fishing-boats for the sake of the offal thrown 

 overboard. The Puffin is the only sea-bird with which 

 the Little Auk might be confounded, but attention to 

 the great difference in size will obviate confusion. 



MANX SHEARWATER.— Plate 18. Length, 

 15 inches. Upper parts all black, under parts 

 white ; the line of division, when the bird is seen 

 in profile, running centrally from the base of the 

 bill to the tail. There are a few inconspicuous 

 grayish mottlings on the white at the sides of the 

 neck. In its general markings the Manx Shear- 

 water therefore resembles the group of cliff-breeders 

 including the Common Guillemot, the Kazorbill, and 

 the Puffin. But the very long, sharply pointed 

 wings, and the bill, legs, and feet, of the Manx 

 Shearwater serve as distinguishing marks. The 

 bill is blackish, long, slender, the upper mandible 

 Gv/rving sharply downwards at the tip. The legs 

 and feet are flesh-colour. Summer migrant. 



Egg. — 1, white and smooth; 2-4 x 1-65 inches 

 (plate 123). 



Nest. — A slight bedding of dry grass at the end 

 of a burrow. 



Distribution. — General in British waters, but 

 breeding principally on islands lying off the west 

 coast of Great Britain, and on islands off the Irish 

 coast. 



Unlike the shorter-winged Guillemot, B5i,zoirbiU, 



