RING-NECKED DUCK. 



[Ay thy a collaris (Donov.). 



The adult male has back of head and crown loose and 

 puffy, at times showing almost as a crest. The head, 

 neck, breast, upper parts and under tail-coverts, black ; 

 the head sometimes glossed with purple and the back 

 with greenish. There is a more or less distinct chest- 

 nut or reddish-brown collar around the middle of the 

 neck, and a white spot upon the chin. The speculum is 

 bluish-gray ; sides of body waved with white and black- 

 ish lines. The under parts are white. The bill is dark 

 grayish blue, with a black tip, and a very pale (in life 

 nearly white) band across it, near the tip; the eyes are 

 yellow. 



The female does not show the neck ring and the bill 



170 



