94 VERMONT AGRICULTURAL REPORT. 



GENUS AIX. 



A. sponsa (Linn.). Wood Duck. Summer Duck. 



Not an uncommon species. It is a permanent resident and is, 

 as Thompson well remarks, one of the most beautiful birds found 

 in the State. It is also one of the very few water birds that nest 

 in trees. 



GENUS AYTHYA. 



A. americana (Eyt.). Redhead. 

 Found in Lake Champlain, sometimes it is not uncommon. 



A. vallisneria (Wils.). Canvasback. 



Sometimes taken in the northern part of Lake Champlain, but 

 it is very rare. 



A. marila nearctica (Stein). American Scaup Duck. 

 Blue bill. 



Not uncommon in Lake Champlain. 



A. affinis (Eyt.). Lesser Scaup Duck. Little Blackhead. 

 Otter Creek, F. H. Knowlton. Lake Champlain, Conger. 



GENUS GLAUCIONETTA. 



G. clangula americana (Bon.). Goldeneye. 

 Common in Lake Champlain, also Connecticut river. 



G. islandica (Gmel.). Barrows Goldeneye. 



There is a single specimen of this duck in the Fairbanks 

 Museum which was found in Vermont. 



GENUS CHARITONETTA. 



C. albeola (Linn.). Bufflehead. Butter-ball. Dipper. 



Not common, but now and then a specimen is shot in Lake 

 Champlain, or near it. It appears only in winter or at least late 

 fall. Formerly much more abundant. 



GENUS CLANGULA. 



Clangula hy emails (Linn.). Old Squaw. 

 Lake Champlain. Not common. Conger. 



GENUS OIDEMIA. 



0. americana (S. & R.). American Scoter. 

 Mr. Horton reports this duck from St. Johnsbury. 



