BIRDS OF THE BRITISH ISLES. 



387 



BrunnWs (Buillemot 



BRUNNICH'S Guillemot (Uria Brunnichi, Sabine) is an 

 extremely rare nomadic autumn migrant to the British 

 Islands, and is found inhabiting the Circumpolar Region. 

 The adult closely resembles the common guillemot in the 

 colouration of the plumage, but can be distinguished from 

 the latter by the short and stout bill, which has horn- 

 coloured lines on the upper mandible, reaching on each 

 side from the gape to the nostrils. 



