( 35 ) 



not by tipping up, as in the previous 

 group, but, by diving, often to a 

 surprising depth. 



They are northern breeders, seldom 

 nesting south of the circumpolar 

 regions. 



GOLDEN EYE. 



CLANGULA CLANGULA (L). 

 [C. glaucion (Sw.)] 



Description. — Length 18-19 inches, 

 Bill short, bluish black. Iris golden 

 yellow giving the bird its popular 

 name. Legs yellow. 



The head is quite large for the size 

 of the bird and has a small crest. The 

 crown and neck are black with green 

 reflecrtions. There is a white spot at 

 the base of the bill. The feathering 

 on the side of the upper mandible does 

 not approach within half an inch of 

 the nostrils. The lower neck and 

 breast are white and the sides are 

 dark grey. The back is black. The 

 wing coverts are white with black 

 bases. The secondaries are mostly 

 white and the axillaries dark. 



The female is rusty brown above 

 and lacks the Vv'hite face-spot. Under- 

 parts are white. The male takes on 

 he female dress during the summer. 



Distribution. — Circumpolar, breed- 

 ing in the sub-arctic regions. Quite 

 common in Winter in the Yangtse 

 Valley usually in small groups or 

 mixed with flocks of other ducks. 



The following are less common 

 but have been taken in the Yangtse 

 Valley:— 



Marila fuligula (L.), Tufted Duck. 



