RING-NECKED DUCK. 



Aythya collaris. 



BARROW'S GOLDEN-EYE. 



Clangula islandica. 



OLD SQUAW. 



Harelda hyemalis. 



HARLEQUIN DUCK. 



Histrionicus histrionicus. 



V 



SURF SCOTER. 



Oidemia perspicillata. 



AMERICAN SCOTER. 



Oidemia americana. 



