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

Table 19. Percent of duck nests found in different types of cover,
Woodworth Study Area, 1966-81.

Table 19 Percent of duck nests found in different types of cover, Woodworth Study Area, 1966-81.
  Nests Cover category
Species n Tent Under fallen vegetation Erect open Erect closed Between clumps Under dominant plant Built-up nest Nest in hole
Mallard 302 10 10 36 36 3 5 <1 <1
Gadwall 582 3 5 31 48 6 7 0 1
Northern pintail 168 5 4 65 14 5 5 <1 2
Green-winged teal 49 20 8 18 29 6 18 0 0
Blue-winged teal 1,892 41 7 26 18 2 5 <1 1
Northern shoveler 163 26 12 44 14 2 2 <1 0
American wigeon 53 6 4 21 49 6 15 0 0
Lesser scaup 48 23 10 38 25 2 2 2 0
Total 3,257 26 7 31 26 3 6 <1 1
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