Waterfowl Production on the Woodworth Station
in South-central North Dakota, 1965-1981
Table 22. Number and average size of hatched clutches among habitats and
species,
Woodworth Study Area, 1966-81.
Table 22. Number and average size of hatched clutches among habitats
and species,
Woodworth Study Area, 1966-81.
|
Native prairie |
Seeded cover |
Cropland |
Total |
Species |
n |
x |
n |
x |
n |
x |
n |
x |
Mallard |
40 |
9.4 |
66 |
8.9 |
1 |
11.0 |
107 |
9.1 |
Gadwall |
140 |
9.9 |
115 |
9.8 |
1 |
8.0 |
256 |
9.9 |
American wigeon |
13 |
8.3 |
12 |
9.2 |
0 |
0.0 |
25 |
8.7 |
Green-winged teal |
16 |
8.5 |
5 |
9.0 |
0 |
0.0 |
21 |
8.6 |
Blue-winged teal |
400 |
10.3 |
200 |
10.4 |
12 |
9.1 |
612 |
10.3 |
Northern shoveler |
32 |
10.2 |
30 |
10.2 |
0 |
0.0 |
62 |
10.2 |
Northern pintail |
37 |
8.0 |
60 |
7.6 |
2 |
10.0 |
99 |
7.8 |
Lesser scaup |
14 |
10.1 |
2 |
11.0 |
1 |
11.0 |
17 |
10.3 |
Total |
692 |
9.9 |
490 |
9.7 |
17 |
9.4 |
1,199 |
9.8 |
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