Waterfowl Production on the Woodworth Station
in South-central North Dakota, 1965-1981
Table 35. Minimum number of duck broods,
Woodworth Study Area, 1965-81.
Table 35. Minimum number of duck broods, Woodworth Study Area, 1965-81.
Species |
1965 |
1966 |
1967 |
1968 |
1969 |
1970 |
1971 |
1972 |
1973 |
1974 |
1975 |
1976 |
1977 |
1978 |
1979 |
1980 |
1981 |
Range |
Total |
 |
Dabbling duck |
Mallard |
9 |
26 |
8 |
2 |
23 |
12 |
20 |
11 |
4 |
10 |
20 |
3 |
19 |
14 |
9 |
10 |
20 |
2-26 |
220 |
13 |
Gadwall |
27 |
39 |
15 |
16 |
34 |
13 |
35 |
14 |
5 |
33 |
13 |
17 |
25 |
17 |
11 |
22 |
14 |
5-39 |
350 |
21 |
Northern pintail |
20 |
13 |
5 |
5 |
22 |
5 |
2 |
3 |
2 |
13 |
6 |
2 |
3 |
3 |
6 |
3 |
2 |
2-22 |
115 |
7 |
Green-winged teal |
5 |
9 |
7 |
4 |
4 |
3 |
7 |
1 |
1 |
3 |
2 |
0 |
0 |
2 |
0 |
1 |
0 |
0-9 |
49 |
3 |
Blue-winged teal |
77 |
165 |
131 |
77 |
147 |
67 |
92 |
73 |
30 |
50 |
119 |
12 |
26 |
55 |
72 |
30 |
27 |
12-165 |
1,250 |
74 |
Shoveler |
12 |
16 |
13 |
5 |
19 |
8 |
4 |
8 |
2 |
4 |
6 |
1 |
2 |
7 |
7 |
5 |
1 |
1-19 |
120 |
7 |
American wigeon |
5 |
5 |
1 |
2 |
4 |
3 |
8 |
4 |
0 |
4 |
1 |
0 |
2 |
4 |
5 |
3 |
7 |
0-8 |
58 |
3 |
Total dabbling
ducks |
155 |
273 |
180 |
111 |
253 |
111 |
168 |
114 |
44 |
117 |
167 |
37 |
80 |
104 |
111 |
74 |
71 |
37-273 |
2,170 |
128 |
Diving ducks |
Redhead |
8 |
2 |
2 |
3 |
3 |
4 |
2 |
2 |
0 |
8 |
4 |
6 |
0 |
2 |
2 |
11 |
3 |
0-11 |
62 |
4 |
Canvasback |
2 |
4 |
1 |
0 |
1 |
3 |
0 |
1 |
1 |
5 |
2 |
4 |
0 |
1 |
11 |
5 |
13 |
0-13 |
54 |
3 |
Lesser scaup |
5 |
6 |
0 |
3 |
9 |
5 |
7 |
5 |
0 |
1 |
3 |
2 |
0 |
5 |
0 |
8 |
13 |
0-13 |
72 |
4 |
Ruddy duck |
9 |
14 |
10 |
2 |
8 |
5 |
2 |
3 |
0 |
11 |
20 |
25 |
0 |
10 |
1 |
5 |
5 |
0-25 |
130 |
8 |
Ring-necked duck |
0 |
2 |
1 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
1 |
0 |
0-2 |
8 |
0.5 |
Total diving
ducks |
24 |
28 |
14 |
8 |
23 |
17 |
11 |
11 |
1 |
25 |
29 |
39 |
0 |
18 |
14 |
30 |
34 |
1-39 |
326 |
19 |
Unidentified |
0 |
0 |
0 |
2 |
4 |
0 |
3 |
5 |
2 |
1 |
0 |
0 |
1 |
0 |
3 |
0 |
5 |
0-5 |
26 |
2 |
Total |
179 |
301 |
194 |
121 |
280 |
128 |
182 |
130 |
47 |
143 |
196 |
76 |
81 |
122 |
125 |
104 |
110 |
47-301 |
2,519 |
148 |
Previous Section -- Table 34.
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