I 12 



VER rEl;RATF.S ; BIRDS. 



Goose. The Terns have the tail very long and forked. 

 They are generally light below, black and bluish above, 

 and of the size of a Dove, but some are no larger than 

 a Robin. They feed upon small marine animals. 



Divers. 



The Great Northern Diver, or Loon, is almost as 



Fig. 165. 



164. — Great Nortliern Diver, or Loon. 



large as a Goose, black above, 

 beautifully spotted with \\hite, 

 and white below. It is exceed- 

 ingh' keen-sighted and war}-, and 

 it di\-es so quickh' that, seeing the 

 flash of the gun, it is often under 

 water before the shot reaches it. 

 Grebes are Di\-ers \\hich are 

 smaller than the Loon, and in 

 the spring ha\'e the head orna- 

 mented \\ith tufts of feathers. 

 When alarmed, they remain be- 

 neath the surface of the \\-ater, 

 ■Crested cirebe. exposing onh' the bill. 



