KKY TO 'nil', ^\■.\•n■.K ihrds oi" i'lokida. 



i6i 



Leniitli, 17: Wins, 7-5°' 'I'-'^i'^^'^- '-jO: l''"' '-/S- 



Head black with violet oloss, speculum gray. Aythya collaris (male). 



Ring=neck Duck. See pas^e 229 



Leno-th, 16.50; WiiiR-. S.25 : Tarsus, 1.40; i;ill, 1.60. 



Head brown ; speculum w liiii . Qlaucionetta clangula ameri= 



cana (female). 

 American Golden Eye. 

 Whistler. See page 23 1 



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'aucioiietta clangula americana. 



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

 I. Tail pointed ; central leathers 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 ; 

 speciiliiiH Avhite. 



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 228 



Aythya affinis (female). 

 Lesser Scaup Duck, 

 Blue-bill. See page 229 



