146 



KEY TO THK WATKR BIRDS OF P^LORIDA. 



Sterna dougalli. 



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

 sus, .90. Adult in summer — bill 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 196 



Length, 15; Wing, 9.75 ; Tail. 7.50; Bill, 1,55 ; Tarsus, 

 .CS5. Bill black, showing tinge of red at tlie base; 

 tail white ; whole of outer tail feather white ; 

 under parts white tinged with rose color ; feet 

 red. 



Sterna dougalli. 

 Roseate Tern. 



See page 197 



Length. 1.^; Wing. 10.30; Tail. 6; Bill. 1.60. Entire 

 plumage olive brown; top of head whitish. 



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



Noddy Tern. 



See page 199 



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 Ijlack. Sterna anaethetus. 



Bridled Tern. See page lyi* 



