9h 
Table 2. Breeding Population Indices by Strata in North Dakota, South Dakota, and 
Minnesota in 1959 and Comparison with 1955 (Cont'd) 
MINNESOTA 
— WwW ~=oSW.”S~*~<CSstSS DL ~SSSC~CSO tL 
a 
Stratum Size (sq. mi.) 12, 386 2h 910 37,296 
Sample Size (sq. mi.) 27.0 ~ 105.0 132.0 
Expansion Factor 458.7 237.2 
Population Index (sample) 78 328 
Population Index (total) 35,778 77,801 113,579 58, 4g 
Species Composition | 
Pintail 1,216 - 1,216 9,459 
Mallard 14,812 26,919 41,731 29,902 
Baldpate - 20, 384 20, 384 = 
Shoveler - - - 720 
Gadwall 2,469 | 622 3,091 - 
BW Teal 17,281 16,727 34,008 15,486 
GW Teal - — - - 
Scaup - — -B, 403 8,403 - 
Canvasback ~ 4,746 4746 - 
Redhead - - - - 
Ruddy - =< - 2,882 
Total 1959 35,778 77,601 113,579 
Total 1958 13,761 4h, 688 - 58, 449 
Percent Change #160 — ATh #94 
Coot 1959 22,018 30,124 52,1h2 
Coot 1958 505 2,075 - 2,580 
