224 MERGANSER SERRATOR. 



whitish, the lower fore neck of a lighter tint, and the upper 

 parts darker with less grey. 



Progress toward Maturity. — M. Temminck states, 

 that " at the age of one year, the young males have the upper 

 parts varied with blackish, the neck and head still retaining 

 their reddish tints," and several authors assert that when 

 two years old they acquire the fully-coloured plumage of the 

 adult. 



