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

Table 22. Number and average size of hatched clutches among habitats and species,
Woodworth Study Area, 1966-81.

Table 22. Number and average size of hatched clutches among habitats and species,
Woodworth Study Area, 1966-81.
  Native prairie Seeded cover Cropland Total
Species n x n x n x n x
Mallard 40 9.4 66 8.9 1 11.0 107 9.1
Gadwall 140 9.9 115 9.8 1 8.0 256 9.9
American wigeon 13 8.3 12 9.2 0 0.0 25 8.7
Green-winged teal 16 8.5 5 9.0 0 0.0 21 8.6
Blue-winged teal 400 10.3 200 10.4 12 9.1 612 10.3
Northern shoveler 32 10.2 30 10.2 0 0.0 62 10.2
Northern pintail 37 8.0 60 7.6 2 10.0 99 7.8
Lesser scaup 14 10.1 2 11.0 1 11.0 17 10.3
Total 692 9.9 490 9.7 17 9.4 1,199 9.8
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