Table I. - Physiographic Distribution of the Breeding Waterfowl Population and 1953 - 1954 Trends, 
, Uncorrected Corrected * Ducks Est. Minimum Percent of State-wide 
Physiographic Ducks/Sq. Mi. Per Square Mile Population Population 
Division Be 53. 1954 1953. 1954 &4Change 1953, 1954 1953 1954 Change 
Minnesota Valley 9.45 10.14 10.58 12.37 + 17% 13, 000 15,000 1% 2% + 1% 
Prairie Hills 23.41 18.31 26.22 22.34 - 15% 212,000 181,000 21% 22% + 1% 
James River Valley 19.81 16.87 22.19 20.58 - 7% 416,000 387,000 41% 47% + 6% 
Missouri Hills 20.45 11.71 22.90 14,29 - 38% 173,000 108,000 17% 13% - 4% 
Missouri Plateau 4,73 2.83%** 5.30 3,45 - 35% 207,000 135,000 20% 16% ~ 4% 
State -wide 12.19 8.89 13.65 10. 85 - 21% 1,021,900 826,000 100% 100% 0 
ee re pC 
* Corrected from ‘ground transect data to compensate for unobserved females on nests. 
Corrected by 1.12 in 1953 and 1,22 in 1954, 
**x Based in 1954 on twice the number of ducks observed and twice the number of square 
miles of the reduced Missouri Plateau coverage. 
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