OP 
Table 1 - Physiographic Distribution of the Breeding Waterfowl Population and 
| 1954 - 1955 Trends 

Uncorrected Corrected* 
Physiographic Ducks Per Ducks Per ~— Estimated 
Division | Square Mile Square Mile Minimum Population 3 
1954 1955 1954 1955 1954 1955 Change 
Minnesota | : we | | ; 
Valley 10.14 5.45 12.37 6.43 15,000 8,000 — - 47% 
Prairie ¢ | 
Hills 18.31 9,28 22. 34 10.95 181,000 88, 000 - 51 % 
James River : 
Valley 16.87 5.89 20.58 6.95 387,000 130,000  - 66 % 
. Missouri See ree oe 
Hills 11.71 5.16 14,29 6.09 108, 000 45,000 - 58 % im 
7 Missouri a 
Plateau ~ 2.83 1.95 3.45 2.30 135,000 — 89,000 oe 34 % 
State-wide** — . _8.89 4.08 10.85 4.81 826,000 360,000 ~— - 56 a | 
* Corrected trout ground transect data to compensate for. liiobserved= 
‘females on nests. Corrected by.1.22 in 1954 and 1.18 in 1955. 
** Based on twice the number of. ducks observed and twice the number 
of square miles. of the reduced Missouri Plateau coverage. 
