Smithsonian Report, 1 91 0.— Duerden. 



Plate 4. 



1. A Pair of Breeders, Showing the Difference in 

 the Plumage of the Cock and Hen. 



The neck and head are covered with down and uniform in 

 color, except for the white ringtowardthe root of the neck 

 in the cock. Theleg is wholly devoid of feathers: the large 

 .scales along the front of the tarsus can be recognized. 



2. A Complete Clipping of "Feminas," the Wing Quills of the Hen, 

 Distinguished by the Black Patches at the Crown of the Plumes. 



