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

Table 20. Percent of upland nests by duck species and top concealment,
Woodworth Study Area, 1966-81.

Table 20. Percent of upland nests by duck species and top concealment, Woodworth Study Area, 1966-81.
  Nests Vegetation top concealment
Species n None Half coverage Total coverage
Mallard 323 23 48 28
Gadwall 608 20 47 34
Northern pintail 182 51 39 11
Green-winged teal 54 7 48 44
Blue-winged teal 1,972 14 54 32
Northern shoveler 169 23 55 22
American wigeon 55 18 53 29
Lesser scaup 53 11 67 21
Total 3,416 18 52 30
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