Waterfowl Production on the Woodworth Station
in South-central North Dakota, 1965-1981
Table 19. Percent of duck nests found in different types of cover,
Woodworth Study Area, 1966-81.
Table 19 Percent of duck nests found in different types of cover,
Woodworth Study Area, 1966-81.
|
Nests |
Cover category |
Species |
n |
Tent |
Under fallen vegetation |
Erect open |
Erect closed |
Between clumps |
Under dominant
plant |
Built-up nest |
Nest in hole |
Mallard |
302 |
10 |
10 |
36 |
36 |
3 |
5 |
<1 |
<1 |
Gadwall |
582 |
3 |
5 |
31 |
48 |
6 |
7 |
0 |
1 |
Northern pintail |
168 |
5 |
4 |
65 |
14 |
5 |
5 |
<1 |
2 |
Green-winged teal |
49 |
20 |
8 |
18 |
29 |
6 |
18 |
0 |
0 |
Blue-winged teal |
1,892 |
41 |
7 |
26 |
18 |
2 |
5 |
<1 |
1 |
Northern shoveler |
163 |
26 |
12 |
44 |
14 |
2 |
2 |
<1 |
0 |
American wigeon |
53 |
6 |
4 |
21 |
49 |
6 |
15 |
0 |
0 |
Lesser scaup |
48 |
23 |
10 |
38 |
25 |
2 |
2 |
2 |
0 |
Total |
3,257 |
26 |
7 |
31 |
26 |
3 |
6 |
<1 |
1 |
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