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

Table 23. Number of duck nests and average size of successfully completed clutches
among treatments within habitats by species,
Woodworth Study Area, 1966-81.


Table 23. Number of duck nests and average size of successfully completed clutches among treatments within
habitats by species, Woodworth Study Area, 1966-81.
   Mallard Gadwall American wigeon Green-winged teal Blue-winged teal Northern shoveler Northern pintail Lesser scaup Total
Habitat and treatment n x n x n x n x n x n x n x n x n x
Native prairie
Burned 2 9.5 18 9.4 4 8.0 3 8.5 48 9.8 2 9.8 1 8.0 1 11.0 79 9.6
Grazed 5 9.6 32 10.0 0 --a 5 9.3 88 10.1 1 10.0 5 7.9 3 11.0 139 9.9
Idle 34 9.2 94 9.9 9 8.7 9 8.9 274 10.4 30 10.2 32 7.8 10 9.5 492 9.9
Seeded cover
Burned 2 7.8 11 9.7 1 10.0 0 -- 9 10.5 1 10.0 2 8.0 0 -- 26 9.8
Idle 67 8.8 105 9.7 11 9.2 4 9.5 189 10.3 27 10.1 57 7.6 3 11.0 463 9.6
Cropland
Standing crop 0 -- 1 8.0 0 -- 0 -- 7 8.1 0 -- 1 11.0 1 11.0 10 8.7
Stubble 0 -- 0 -- 0 -- 0 -- 1 6.0 0 -- 0 -- 0 -- 1 6.0
Mulched stubble 0 -- 0 -- 0 -- 0 -- 0 -- 0 -- 0 -- 0 -- 0 --
Summer fallow 1 11.0 0 -- 0 -- 0 -- 2 11.5 0 0.0 1 9.0 0 0.0 4 10.8
aIndicates no data.


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