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Waterfowl Production on the Woodworth Station
in South-central North Dakota, 1965-1981

Table 21. Percent of upland nests by duck species and side concealment,
Woodworth Study Area, 1966-81.

Table 21. Percent of upland nests by duck species and side concealment, Woodworth Study Area, 1966-81.
    Vegetative side concealment
Species Nests (n) None 1/4 nest 1/2 nest 3/4 nest All nest
Mallard 323 2 2 11 25 59
Gadwall 608 1 1 10 31 59
Northern pintail 182 2 11 25 27 36
Green-winged teal 54 0 2 4 43 52
Blue-winged teal 1,972 1 2 11 30 56
Northern shoveler 169 0 1 16 27 56
American wigeon 55 0 4 13 36 47
Lesser scaup 53 0 0 15 23 62
Total 3,416 1 2 12 30 56
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