44 PETRELS, SHEARWATERS, ETC. 



FULMARS. 



Birds of the open ocean, very seldom ap- 

 proaching land in this section. Excepting 

 in the peculiar flight, characteristic of the 

 group, noted on page 42, they closely resem- 

 ble gulls, but the bill is shorter and thicker, 

 fig. 30. Our species have a light and dark 

 phase of plumage. 



Fig. 31. 



Fulmar. 1-10. 



19. FULMAR. 



About the size of a Ring-billed Gull, 18. 

 The head, neck, and lower parts are white, 

 with the back pale blue in the light phase, 

 fig. 31, but in the dark phase the bird is sooty 

 brown throughout. Occurs on the North 



