NORTH AMERICAN BIRDS. 45 



single and pure white. Five eggs collected on Copper Island, July 

 I2th and i3th, exhibit the following dimensions: 75 by 49, 71.5 by 

 48.5, 71.5 by 51, 68 by 50, 71.5 by 48.5 mm* These eggs all belonged 

 to the dark phase of birds. 



86; Fulmams glacialis rodgersii (CASS). [705^.] 



Rodger's Fulmar. 



Hab. Bering Sea. 



Rodger's Fulmar is similar to the preceding, but there is no dark 

 phase known. Its habitat seems to be restricted to the islands of 

 Bering Sea and some portions of the North Pacific, nesting especially 

 in great abundance on the islands of the Prybilof group. Its general 

 habits, nesting, eggs, etc., are the same as those of the preceding. 

 Size of egg 2.83x1.91. 



89. Puffinus major FABER [709.] 



Greater Shearwater. 



Hab. Atlantic Ocean. 



A wanderer over the entire Atlantic Ocean, and sometimes seen in 

 immense flocks skimming the billows in its light and graceful manner, 

 similar to the smaller Petrels. Its flight is described as most beautiful, 

 gliding as it does through the air without visible motion of its wings. 

 It also swims and dives with ease. Common Atlantic and Wandering 

 Shearwater are other names by which it is known. 



There appears to be very little knowledge in the regard to the 

 nesting habits of the Greater Shearwater. It is known, however, to 

 breed in the islands of the North Atlantic and is often confounded with 

 other species of Shearwaters. 



Dr. Brewer describes an egg of this bird, collected on an island of 

 South Greenland, as being nearly oval in shape, with a ground color, 

 originally white, but soiled by the peaty black earth from which it was 

 excavated; size 2.88x2.00. Another from the same locality is of 

 smaller size, and yellowish-white, which measures 2.75x1.85. 



[90.] Puffinus puffinus (BRUNN). [711.] 



Manx Shear-water. 



Hab. North Atlantic, chiefly the eastern side; rare or casual off the North American coast (?). 



In many places in the regions of the Mediterranean and Adriatic 

 Seas and the Grecian Archipelago this is a common species. It is said 

 to wander to Greenland. Breeds on the islands of Pantellaria, Gozo, 

 Malta, and other smaller islands of the Mediterranean, depositing a 

 single pure white egg on the bare ground, in crevices, or under frag- 

 ments of rocks. 



This species also breeds on the islands off the southern coast of 



*2.95 by 1.92, 2.85 by 1.90, 2.85 by 2.00, 2.67 by 1.96, 2.85 by 1.90. 



