THE SHELLDRAKE OR BURROW-DUCK. 139 
When we first get them in November, the birds are duller 
coloured than later in the spring, owing to the greyish edgings 
of the freshly-moulted feathers wearing off during the winter 
months. 
Young birds, as we see them, only differ in being smaller 
and duller coloured, and in having the bills duller and paler 
coloured, and the legs and feet a sort of bluish fleshy. 
THE PLATE, which represents birds in the full brightness 
of the April plumage, is very good, except that the bills are 
too much of a brick-dust and not enough of a carmine red, 
and that the feet should be a fleshy pink or red, and not 
tile red as the artist has depicted. 
THE RESTRICTED genus 7adorna (vide note p. 123,) contains, so 
far as I know, only one other species. 7. radjah of Lesson 
from Northern and Eastern Australia, and several of the 
Islands of the Archipelago. 
