BRITISH BIRDS. 



401 



c|)f fl)c JUtk, or 



BILL strong, thick, convex, compressed on the 

 sides: nostrils linear, placed parallel to the edge 

 of the bill, and near it : tongue almost as long as 

 the bill : toes, three in number, all placed forwards, 

 and completely webbed. 



They are seldom seen on shore, unless during 

 the breeding season. No well-marked difference 

 is observable between the sexes. The moult takes 

 place twice a-year. They generally nestle, and 

 live much like the Guillemots. 



VOL. II. 



3 E 



