THE BIRD BOOK 
88. Cory’s Shearwater. Puffinus borealis. 
This species probably breeds in the far south. 
It has been found only off the coast of Massa- 
chusetts and Long Island. This is the largest 
of our Shearwaters, and can be distinguished from 
the next species by its wholly white underparts, 
its light mantle and yellowish bill. We have no 
data relative to its nesting habits. 
89- Greater Shearwater. Puffinus gravis. 
Range.- — The whole of the Atlantic Ocean. 
Thousands of them spend the latter part of the 
summer off the New England coast, where they 
are known to the fishermen as Haglets. Their 
upper parts are brownish gray, darker on the 
wings; bill and feet dark; under parts white, with 
the middle of the belly and the under tail cov- 
ers dusky. Length about 20 inches. Little is 
known concerning their nesting quarters, al- 
though they are said to breed in Greenland. 
From the fact of their early appearance off the 
New England coast it is probable that the great- 
er part of them nest in the far south. 
[90.] Manx Shearwater. Puffinus puffinus. 
This species inhabits the North Atlantic ocean 
chiefly on the European side, being abundant in 
the Mediterranean and in the British Isles. These 
birds deposit their single pure white eggs in 
Cory Shearwater 
Greater Shearwater 
crevices among the cliffs, on the graound or in 
burrows dug by themselves. Size of egg 2.35 
x 1.60. Data. — Isle of Hay, North Scotland. 
June 1, 1893. Single egg laid at the end of a 
three foot burrow. 
Egg- of Audubon’s Shearwater — White 
Audubon’s Shearwater 
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