148 Manual of the Game Birds of India. 



throughout. The sexes are quite alike, 

 and rhe male is clothed in the sombre 

 plumage of the female, although both 

 sexes exhibit the brilliant speculum so 

 characteristic of both sexes of many 

 species of True Ducks. Inasmuch as the 

 drake resembles the duck, there is no 

 necessity for a post-nuptial moult, and 

 there is no evidence to show that the 

 drakes of the Grey Ducks have any but 

 the ordinary autumnal moult. 



The plumage of the Grey Ducks is 

 more or less spotted. The bill resembles 

 that of the domestic Duck, and is of equal 

 width throughout its length. 



In this group should be placed the 

 Chinese Grey Duck (P. zonorhyncha)^ which 

 may probably be found in the eastern 

 parts of the Shan States.* It resembles 

 the Indian Grey Duck, but may be 

 distinguished by the following characters. 

 The bill is black, with the tip of the 

 upper mandible alone yellow. The 

 speculum is brilliant metallic blue, and 

 there is a double band of black and 



* As this is passing through the press I see 

 in the "Asian" (January loth, 1899), that a 

 correspondent states that he has shot Spotbill 

 Ducks, which he terms zonorhyncha, at Kengtung, 

 in the Shan States. 



