BIRDS OF THE BRITISH ISLES. 



397 



Bulwer'0 petrcL 



Bulwer's Petrel {Biihveria coIinnbi?ia, jMoquin-Tandon) is 

 a very rare abnormal spring migrant to the British Isles, 

 and is found inhabiting the Northern Circum-tropical seas. 

 The adult has the general colouration of the plumage 

 nearly uniform sooty-black ; greater wing-coverts margined 

 with paler; the tail consists of twelve feathers, and *is 

 wedge-shaped ; irides, dark hazel ; bill, black ; legs and 

 toes, deep reddish-brown ; webs, dark brown 

 about ten inches. 



Length, 



