TABLE B-55. —Waterfowl population summary, southern Manitoba, July 1965 
Stratum A 
Stratum B 
Strata A and B 
Area in square miles- 
Linear miles in sample- 
Square miles in waterfowl 
sample - 
Expansion factor- 
10, 368 
1, 578 
197.25 
52.563 
28, 600 
636 
79.5 
359.75 
38,968 
2,214 
276.75 
Broods: 
Broods seen- 
Brood indexes- 
Broods per sq. mile- 
83 
4, 400 
.4 
48 
17,300 
.6 
131 
21, 700 
.56 
Late nesters: 
Late nesters seen-— 
Late nesting index- 
Late nesters per sq. mile 
411 
21, 600 
2.1 
34 
12, 200 
.4 
445 
33, 800 
.87 
Coots: 
Coot broods seen-- 
Coot brood index - 
Coot broods per sq. mile 
87 
4, 600 
.4 
31 
11, 200 
.4 
118 
15,800 
.41 
Ponds: 
Ponds seen- 
Pond index- 
Ponds per sq. mile- 
2, 457 
129,100 
12.5 
722 
259, 700 
9.1 
3, 179 
388,800 
10.0 
TABLE B-56. --Species breeding composition, Michigan, 1962 to 1965 
Species 
1962 
1963 
1964 
1965 
Mallard - 
32.8 
37.1 
28.0 
39.2 
Black duck --- 
27.4 
26.0 
24.0 
26.6 
Blue-winged teal - 
12.2 
11.6 
13.7 
7.6 
Wood duck-- 
8.9 
10.4 
13.0 
9.2 
Ring-necked duck- 
10.9 
8.8 
10.2 
2.5 
Merganser - 
4.4 
3.5 
2.4 
3.2 
Unidentified- 
3.4 
2.6 
8.7 
11.7 
Total - 
100.0 
100.0 
100.0 
100.0 
82 
