Table I - Physiographic Distribution of the Breeding Waterfowl Population and 1951-1952 Trends 

Uncorrected Corrected * Est. Minimum Percent of 
Ducks/Sq. Mile Duck , il i -wi : 
Physiographic oka) San NePe Deckaysdy Ne © Percent a i as i =e Witte Peppa 
Division 1951 1952 1951 1952 Change 1951 1952 1951 1952 Change 
Minnesota 
Valley 5.36 8.95 6.16 10.92 + 77 8, 000 14, 000 2 1 - 1 
Prairie 
Hills 12.19 17.61 14.02 21.48 + 53 114, 000 174, 000 24 17 - 7 
James River 
Valley 7.91 19.41 9.10 23.68 +160 171, 000 445,000 35 44 +9 
Missouri 
Hills 10.59 18.08 12.17 22.06 + 81 92,000 167, 000 19 17 - 2 
Missouri 
Plateau 2.14 4,24 2.46 5.17 +110 96, 000 202, 000 20 20 0 
State-wide 5.71 10.96 6.57 13.37 +104 481,000 1,002,000 
ee epee ee eg PS Se 
% Corrected from ground transect data to compensate for unobserved females on nests. 
Corrected by 1.15 in 1951 and 1.22 in 1952. 
102 
