Waterfowl Production on the Woodworth Station
in South-central North Dakota, 1965-1981
Table 23. Number of duck nests and average size of successfully completed
clutches
among treatments within habitats by species,
Woodworth Study Area, 1966-81.
Table 23. Number of duck nests and average size of successfully completed
clutches among treatments within
habitats by species, Woodworth Study Area, 1966-81.
|
Mallard |
Gadwall |
American wigeon |
Green-winged teal |
Blue-winged teal |
Northern shoveler |
Northern pintail |
Lesser scaup |
Total |
Habitat and treatment |
n |
x |
n |
x |
n |
x |
n |
x |
n |
x |
n |
x |
n |
x |
n |
x |
n |
x |
Native prairie |
Burned |
2 |
9.5 |
18 |
9.4 |
4 |
8.0 |
3 |
8.5 |
48 |
9.8 |
2 |
9.8 |
1 |
8.0 |
1 |
11.0 |
79 |
9.6 |
Grazed |
5 |
9.6 |
32 |
10.0 |
0 |
--a |
5 |
9.3 |
88 |
10.1 |
1 |
10.0 |
5 |
7.9 |
3 |
11.0 |
139 |
9.9 |
Idle |
34 |
9.2 |
94 |
9.9 |
9 |
8.7 |
9 |
8.9 |
274 |
10.4 |
30 |
10.2 |
32 |
7.8 |
10 |
9.5 |
492 |
9.9 |
Seeded cover |
Burned |
2 |
7.8 |
11 |
9.7 |
1 |
10.0 |
0 |
-- |
9 |
10.5 |
1 |
10.0 |
2 |
8.0 |
0 |
-- |
26 |
9.8 |
Idle |
67 |
8.8 |
105 |
9.7 |
11 |
9.2 |
4 |
9.5 |
189 |
10.3 |
27 |
10.1 |
57 |
7.6 |
3 |
11.0 |
463 |
9.6 |
Cropland |
Standing crop |
0 |
-- |
1 |
8.0 |
0 |
-- |
0 |
-- |
7 |
8.1 |
0 |
-- |
1 |
11.0 |
1 |
11.0 |
10 |
8.7 |
Stubble |
0 |
-- |
0 |
-- |
0 |
-- |
0 |
-- |
1 |
6.0 |
0 |
-- |
0 |
-- |
0 |
-- |
1 |
6.0 |
Mulched stubble |
0 |
-- |
0 |
-- |
0 |
-- |
0 |
-- |
0 |
-- |
0 |
-- |
0 |
-- |
0 |
-- |
0 |
-- |
Summer fallow |
1 |
11.0 |
0 |
-- |
0 |
-- |
0 |
-- |
2 |
11.5 |
0 |
0.0 |
1 |
9.0 |
0 |
0.0 |
4 |
10.8 |
aIndicates no data.
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