ql 
Table 2. Breeding Population Indices by Strata in North Dakota, South Dakota, and 
Minnesota in 1959 and Comparison with 1958 
'58 Totel 
—— ee ee 

Stratum Size (sq. mi.) 
Sample Size (sq. mi.) 
Expansion Factor 
Population Index (sample) 
Population Index ( total) 
Species Composition 
Pintail 
Mallard 
Baldpate 
Shoveler 
Gedwali 
BW Teal 
GW Teal 
Scaup 
Canvasback 
Redhead 
Ruddy 
Total 1959 
Total 1958 
Percent change 
Coot 1959 
Coot 1958 
Percentage change 
NORTH DAKOTA 
West Central Fast *59 Total 
23,474 33,861 13,330 70,665 
75.0 297.0 36.0 408.0 
313.0 114.0 370.3 ~ 
ke 1,111 22 - 
13,146 126,654 8,147 147,947 
- 12,918 - 12,918 
11, 398 45,089 6,110 62,597 
= 6,079 = 6,079 
- 10.006 - 10,006 
- 4,180 - 4,180 
1,748 29, 384 2,037 33,169 
- 8,992 - 8,992 
cx 3; 546 a 3, 546 
z 2,280 = 2,280 
- 4,180 ~ 4,180 
13,146 126,654 8,147 147,947 
28, B44 349, 716 30,138 - 
-54 -64 -73 - 
0 30,096 370 30,466 
920 22, 42h 2,705 - 
a #34 -86 -- 
408, 698 
80,410 
153,250 
11,611 
21, 350. 
27, 500 
19 5 503 
909 
4,476 
23,429 
5,805 
455 
408, 698 
-64 
26,049 
#17 
