KEY TO THE WATliR BIRDS OF FLORIDA. 



143 



Family STERCORARIID^E. Jaegers. 



Stercorarius parasiticus ( adult ). 



Stercorarius parasiticus (immature). 



Stercorarius parasiticus ( foot ). 



Central tail feathers elongated in the two following species : 



Length. 17; Wing, 13 : Tail (adult), about 8.40; Tail 

 (immature), about 6 ; Bill, 1.20. 



Length, 20.50 ; Wing, 12.25 : Tail (adult), about 12.50 ; 

 immature, about 6 ; Bill, i.io. 



Stercorarius parasiticus. 



Parasitic Jaeger. See page 1S9 



Stercorarius longicaudus. 

 Long-tailed Jaeger. See page 190 



