22 ROCHESTER ACADEMY OF SCIENCE. 



147. Aythya vallisneria (Wils.) Canvasback. 



Transient and winter visitant; occasional. Fairly common on 

 the smaller lakes during the winters of 1896 97, 1897 98, 1898 99. 

 Nov. 15 March 20. 



148. Aythya marila (Linn.) American scaup duck. 

 Transient visitant; common. Not uncommon in winter, Oct. i 



April 25. Found on all our larger bodies of water. Called ''Lake 

 Bluebill." 



149. Aythya affinis (Eyt.) Lesser scaup duck. 



Transient visitant; common. March 20 May 20; Oct. i Nov. 

 20. Often taken in winter and a few remain through the summer. 

 Found on lakes, ponds and streams. Called "Marsh bluebill" and 

 "Creek bluebill." 



150. Aythya collaris (Donov.) Ring-necked duck. 

 Transient visitant; uncommon. I have never taken it. "Com- 

 mon on Lake Ontario" Short, p. 7. Buffalo "Tolerably common 

 migrant" Berg. p. 5. Elmira, "to be met with at most all seasons " 

 Gregg No. 186. 



151- Clangula clangula americana Faxon American golden- 

 eye. 



Winter visitant ; common. Nov. i April 25. Found on all our 

 lakes. Called "Whistler." 



153. Charitonetta albeola (Linn.) Buffle-head. 



Transient visitant; common. Oct. 10 Nov. 25; April 10 May 

 20. Frequently taken in midwinter. Found on all lakes and ponds. 

 Called "Butterball." 



154. Harelda hyemalis (Linn.) Old-squaw. 



Transient visitant; common on lakes and ponds. Oct. 15 

 Nov. 20; April i 25. Common on Niagara River in winter, and 

 abundant in migration. Called ' 'Coween. ' ' 



155. Histrionicus histrionicus (Linn.) Harlequin duck. 

 Accidental visitant. Buffalo, Berg, p. 5. 



1 60. Somateria dressed Sharpe American eider. 



Winter visitant ; rare. Branchport, Feb., 1873 Aub. p. 39. 

 Buffalo, "occasional winter visitant" Ottomar Reinecke. 



