
LITERATURE CITED 
Atwood, Earl Le, and Clinton F. Wells, Jr. 
196la. Waterfowl harvest in the Mississippi Flyway States during 
the 1960-61 hunting season. U. S. Fish and Wildlife Service, 
Special Scientific Report:Wildlife No. 56, 49 p. 
196lb. Waterfowl harvest in the United States during the 1960-6] 
hunting season. U. S. Fish and Wildlife Service, Special Scientific 
Report :Wildlife No. 55. (in press). 
Geis, Aelred D. , 
1959. Annual and shooting mortality estimates for the canvasback. 
Journal of Wildlife Management, vol. 3, no. 3, p. 253-261. 
and Earl L. Atwood. 
1961. Proportion of recovered waterfowl bands reported. Journal 
of Wildlife Management, vol. 25, no. 2, p. 154-159. 
>» and Samuel M. Carney. 
1961. Preliminary report on the species composition and age 
ratios in duck wing collections during the 1960 hunting season. 
U. S. Fish and Wildlife Service. Unpublished report. (filed 
Patuxent Research Center), 25 p. 7 
Smith, Robert I., and Aelred D. Geis. 
1961. The pre-hunting season banding program (mallard and black 
ducks) progress report for 1959-1960. U. S. Fish and Wildlife 
Service, Special Scientific Report:Wildlife No. 60.29 p.,-20-figs. 
