14 



KEY TO THK WATI':R BIRDS OF FLORIDA. 



Sterna duugalli. 



> 



Length, 15; Wing, 10.25; Tail, 6.60; Bill, 1.50: Tar- 

 sus, .90. Adult in summer — i)ill dull orange red 

 tipped with black ; feet orange red ; under parts 

 white. Adult in winter — bill dark brown; feet 

 brown; a dusky black patch on sides of the 

 head inclosing eye ; inner web of outer tail 

 feather darker than outer web in all plumages. 



Sterna forsteri. 

 Forster's Tern. 



See page 64 



Length, 15; Wing, 7.75 ; Tail, 7.50; Bill, 1.55 ; Tarsus, 

 .85. Bill black, showing tinge of red at the base; 

 tail white ; whole of outer tail feather white ; 

 under parts white tinged with rose color ; feet 

 red. 



Sterna dougalli. 

 Roseate Tern. 



See page 65 



Length, 15; Wing, 10.30; Tail, 6 ; Bill, 1.60. Entire 

 plumage olive brown; top of head whitisli. 



Immature birds have the top of the head brownisli. Anous stolidus. 



Noddy Tern. 



See page 67 



Length, 14.50; Wing, lO; Tail, 6; Bill, 1.60. 

 Crown black ; forehead and line extending over 



the eye white; mantle gray ; under parts white ; 

 bill and feet black. 



Sterna anaethetus. 



Bridled Tern. See page 66 



