KEY TO THE WATER BIRDS OF FLORIDA. 



l6l 



Lenp;tli, 17; Wing, 7.50; Tarsus, 1.30: Bill, 1.75. 

 Head black with violet gloss; speculum gray. 



Length, 16.50; Wing, 8.25; Tarsus, 1.40; Rill, 1.60. 

 Head brown ; speculum white. 



Aythya collaris (male). 

 Ring-neck Duck. See page 229 



Qlaucionetta clangula ameri- 

 cana (female). 

 American Golden Eye. 

 Whistler. See page 231 



Hind toe with well-defined membranous lobe or flap. 



Belly white, sometimes grayish or blackish on lower part. 

 Head showing more or less white or grayish white. 



G!aiicionetta clangula americana. 



Length, including lengthened tail. 21 ; Wing, S.50; Bill, 

 I. Tail pointed ; central feathers longest; under 

 tail coverts white. 



Length, 17.75; Wing, S. 25 : Tarsus, 1.30; Bill, 1.60. 

 Head brownish showing white at base of bill ; 

 .speculiiin white. 



Length, 16.50; Wing, 7.70: Tarsus, 1.25; Bill, 1.50. 

 Similar to preceding, but somewhat smaller. 



Clangula hyemalis. 



Clangula hyemalis. 



Old Squaw. See page 232 



Aythya marila nearctica 

 (female). 

 Greater Scaup Duck. 

 Blue=bill. See page 22S 



Aythya affinis (female). 

 Lesser Scaup Duck. 

 Blue-bill. See page 229 



