Birds of Britain 



tail coverts and thigh patches, and also at the base of the 

 outer tail feathers. Length 7 in. ; wing 6 in. 



THE FRIGATE PETREL 



Pelagodroma marina (Latham) 



Of late years two examples of this Petrel have been 

 washed up on our shores. The Salvages are the nearest 

 breeding haunts of this species, but it is also found in the 

 south seas. 



The crown, nape, and patch behind the eye are slate grey ; 

 upper parts grey; wing coverts brown; quills blackish. 

 Tail black ; under parts white tinged with grey on the flanks. 

 Length 7 "75 in.; wing 6"25 in. 



THE GREAT SHEARWATER 



Pufflnus gravis, O'Reilly 



This species is a fairly regular summer visitor to the 

 waters round our coasts, but it does not often approach the 

 land. 



Nothing is known of its breeding haunts, which are 

 probably in the Antarctic seas. 



The upper parts are ash brown, mottled with white on 

 the upper tail coverts. Under parts white, sometimes 

 brownish on the belly. Legs pinkish. Length 19 in. ; wing 

 127 in. 



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