NORTH AMERICAN BIRDS EGGS. 49 



$6. I. Rodger Fulmar. Fulmarus rodgersii. 



Range. North Pacific, breeding in large numbers on some of the islands in 

 Bering Sea; south to California in winter. Very similar to the two preceding 

 species except that the back is mixed with whitish, it is not believed to have a 

 dark phase. Their breeding habits and eggs do not differ from the common 

 Fulmar. The eggs are laid on the rocky cliffs during June. 



87. Slender-billed Fulmar. Priocella glacialoides. 



Range. Southern seas, appearing on the Pacific coast of the United States in 

 the summer. This species has a paler mantle than the others of the 

 family, and the primaries are black. The make-up and plumage of the whole 

 bird is more like that of the Gulls than any of the others. They probably 

 breed in the far south during our winter, although we have no definite data 

 relative to their nesting habits. 



88. Cory Shearwater. Puffinus borealis. 



This species probably breeds in the far south. It has been found only off the 

 coast of Massachusetts 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 covers dusky. Length about 

 20 inches. Little is known concerning their nesting quarters, although tlu-y 

 are said to breed in Greenland. From the fact of their early appearance off the 

 New England coast it is probable that the greater 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 crevices among the cliffs, on the ground 

 or in burrows dug by themselves. Size of egg 2.35 x l.tiO. Data. Isle of Hay. 

 North Scotland. June 1, 1893. Single egg laid at the end of a three foot 

 burrow. 



91. Pink-footed Shearwater. Puffinus creatopus. 



Range. Pacific Ocean, north on American side to California in summer. 



This species, whose breeding habits are little known, is similar in- 

 color to the Greater Shearwater, differing chiefly in the yellowish- b 

 pinkish colored feet. 

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