CHECK LIST OF NEW YORK BIRDS 23! 



69 (146) Redhead 



Aythya americana (Eyt.) 



70 (147) Canvas-back 



Aythya vallisncria (Wils.) 



71 (148) American scaup duck 

 Aythya marila (Linn.) 



72 (149) Lesser scaup duck 



Aythya affinis (Eyt.) 



