A NATURAL HISTORY OF 
THE DUCKS 
BY 
JOHN C. PHILLIPS 
ASSOCIATE CURATOR OF BIRDS IN THE MUSEUM 
OF COMPARATIVE ZOOLOGY AT HARVARD COLLEGE 
' ^ ' I- ' V ZCKjLt)6<CAi ^ 'Sk 
WITH PLATES IN COLOR AND IN BLACK AND WHITE 
FROM DRAWINGS BY’ 
FRANK W. BENSON, ALLAN BROOKS 
LOUIS AGASSIZ FUERTES 
AND 
HENRIK GRONVOLD 
VOLUAIE II 
THE GENUS ANAS 
BOSTON AND NEW YORK 
HOUGHTON MIFFLIN COMPANY 
EtbcretUe |)rcs6, CamfiriBae 
1923 
