United States Department of the Interior 
Fish and Wildlife Service 
. Bureau of Sport Fisheries and Wildlife 
PRE-HUNTING-SEASON BANDING OF MALLARDS AND BLACK DUCKS 
Progress Report, 1959 and 1960 
Prepared by 
Robert I. Smith and Aelred D. Geis — 
Branch of Wildlife Research 
U. S. Fish and Wildlife Service 
Special Scientific Report--Wildlife No. 60 
Washington : September 1961 
