CHECK LIST OF NEW YORK BIRDS 
73 (147) Canvas-back 
Aythya vallisneria (Wils.) 
74 (148) American scaup duck 
Aythya marila (Linn.) 
75 (149) Lesser scaup duck 
Aythya affinis (Eyt.) 
76 (150) Ring-necked duck 
Aythya collaris (Donov.) 
233 
