TABLE B-27.--Summary, waterfowl breeding population survey, 
Montana, 1965 
Stratum 
Total 
1 
2 
Area (sq. mi.)- 
40,500 
33,000 
73,500 
Sample (sq. mi.)- 
326.5 
412 
738.5 
Population index: 
Ducks (per sq. mi.)- 
Total ducks- 
6.3 
256,000 
14.3 
471. 000 
727,000 
TABLE B-28.--Waterfowl breeding population index, Montana, 1965 
[Index numbers in thousands] 
Species 
Stratum 
Total 
1 
2 
Ducks: 
Dabblers: 
Mallard-- 
172.5 
147.5 
320.0 
Gadwall-- 
10.0 
59.5 
69.5 
Widgeon- 
6.0 
24.5 
30.5 
Green-winged teal- 
3.0 
4.0 
7.0 
Blue-winged teal- 
14.5 
24.5 
39.0 
Shoveler- 
7.5 
28.0 
35.5 
Pintail- 
38.0 
165.5 
203.5 
Subtotal- 
251.5 
453.5 
705.0 
Divers: 
Redhead- 
1.5 
2.0 
3.5 
Canvasback- 
— 
2.0 
2.0 
Scaup - 
2.5 
11.5 
14.0 
Ring-necked duck- 
0.5 
1.0 
1.5 
Buff lehead- 
trace 
0.5 
0.5 
Ruddy duck-- 
— 
trace 
trace 
Subtotal- 
4.5 
17.0 
21.5 
Miscellaneous: 
Merganser - 
trace 
0.5 
0.5 
Grand total- 
256 
471 
727 
62 
