ORNAMENTAL WATERFOWL. 59 
Female.—Considerably smaller; plumage less bright ; 
protuberance on bill absent. 
Young.—Legs and feet pale bluish lead-colour; upper 
mandible black with bluish tip ; lower mandible pinkish. The 
general plumage resembles that of adults, but lacks the pro- 
tuberance on the bill, and the black portions are less glossy ; 
eye dark brown. 
Egg.—Whitish; six to seven in number. July-September. 
AMERICAN BLACK-BACKED GOOSE OR COMB-DUCK. 
AMERICAN WATTLED DUCK. 
(Sarcidiornis carunculata). 
This, the American form of Sarcidiornis melanonota, was 
first acquired in 1876 by the Zoological Society of London, but 
has not bred in the Gardens. Messrs. Sclater and Salvin state 
that the range of this Duck in South America is somewhat 
limited, seldom occurring beyond the upper waters of the basin 
of the Parana. The general appearance of the American Comb 
Duck is similar to that of the Indian species, with the difference 
that the female is adored with a comb as well as her mate, 
the appendage being very large in both sexes, and earning for it 
the name of Wattled Duck. There is also a good deal more 
black upon the sides and flanks, than in the Indian form. 
AFRICAN BLACK-BACKED GOOSE OR COMB-DUCK. 
AFRICAN WATTLED DUCK. 
(Sarcidiornts africana). 
Dr. Sclater states that an example of this form of Sarcs- 
dtornis was purchased at the Knowsley sale in 1851. It is an 
inhabitant of Africa and Madagascar, and differs only from 
