I02 The Natural History of British Ducks 
The young females attain full plumage by December, and I have noticed 
that many of these, after casting the small spotted feathers of immaturity, get 
the clear grey-white breasts without showing spots. It is a mistake, however, 
to assume that all these unspotted females are immatures, as many old females 
of the light type also assume this garb. 
