606 
ECONOMIC RELATIONS OF OUR BIRDS. 
260. Fuligula marila (Linn.), Steph. GREATER BLACK-HEAD; SCAUP 
DUCK. Group I. Class c. 
Not a common migrant. 
Food: Shell-fish (Wilson). Small fry, cray-fish, grass that grows along river 
beds (Audubon). 
261. Fuligula affinis (Eyt.), LESSER BLACK-HEAD; BLUE-BILL. 
Group I. Class c. 
This is an abundant migrant which breeds in small numbers about Berlin and 
doubtless in other parts of the state. 
Food: Small fry, cray-fish, and grasses which grow along beds of rivers (Audu¬ 
bon from Samuels). 
262. Fuligula collaris (Donov.), Bp. RING-NECK; BLACK-HEAD. 
Group I. Class c. 
This Duck is also an abundant migrant which is associated with the last, and 
doubtless a few breed with us as they do in Northeastern Illinois. 
263. Fuligula ferina Americana (Eyt.), Coues. AMERICAN POCHARD; 
RED-HEAD. Group I. Class c. 
A rather common migrant. 
Food: Stems and roots of Vallisneria, various aquatic plants, small fish, 
aquatic insects (Samuels). 
264. Fuligula vallisneria (Wils.), Steph. CANVAS-BACK. Group I. 
Class c. 
A common migrant. Many are shot on Lake Puckawa. 
Food: Roots of Vallisneria (Wils.) Vallisneria (De Kay). 
265. Clangula glaucium (Linn.), Brehm. GOLDEN-EYE; GANOT. 
Group I. Class c. 
A common migrant. Most abundant about the large lakes. ' Some are known 
to winter on Lake Michigan, north of Chicago. 
Food: Shellfish and small fry (Wilson). Small fish and aquatic plants 
(Samuels). 
266. Clangula islandica (Gm.), Bp. BARROW’S GOLDEN-EYE. Group 1. 
Class c. 
Mr. Nelson reports this species as a winter resident on Lake Michigan, and 
states that Dr. Hoy writes that a specimen was shot at Racine during the winter 
of 1860. 
267. Clangula albeola (Linn.), Steph. BUFFLE-HEAD; BUTTER-BALL; 
SPIRIT DUCK. Group I. Class c. 
A common migrant and more abundant than the preceding members of this 
genus. It remains upon our streams until they are frozen over, and it is among 
the first to return in the spring. 
Food: Shellfish, shrimps, etc. (Wilson). Aquatic vegetables and insects 
(De Kay), Small fish and crustaceans (Samuels). 
