398 



BIRDS OF THE BRITISH ISLES. 



Mil60iV6 petrel 



John QuNCAN. 



Wilson's Petrel {Oceanites Wilsoni^ Bonaparte) is a rare 

 straggler to the British Islands, and is found inhabiting the 

 Southern Seas. The adult has the general colour of the 

 plumage sooty-black ; head and neck, lighter ; wings and 

 tail (the latter nearly square), darker; wing-coverts and 

 inner secondaries, edged with greyish; rump, upper tail- 

 coverts, and patch on thighs, white ; base of outer rectrices, 

 marked with white ; irides, deep hazel ; bill, black ; legs 

 and feet, black ; webs, yellow at their bases. Length, 

 about seven inches. 



