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

Table 26. Upland nests success by duck species for all years combined,
Woodworth Study Area, 1966-81.


Table 26. Upland nests success by duck species for all years combined, Woodworth Study Area, 1966-81.
Species Nests found (n) Nests hatched (n) Percent apparent success Daily mortality rate Percent Mayfield successa
Mallard 367 109 30.0 0.0545 14.9
Gadwall 654 264 40.4 0.0440 21.7
Northern Pintail 225 100 44.4 0.0516 16.5
Green-winged teal 56 22 39.3 0.0532 15.6
Blue-winged teal 1,925 607 31.5 0.0548 14.7
Northern shoveler 181 63 34.8 0.0519 16.3
American Wigeon 58 25 43.1 0.0430 22.4
Lesser scaup 51 18 35.3 0.0550 14.6
Total 3,517 1,208 34.4 0.0521 16.3
aNest success among species did not differ significantly (X 27 = 13.1, P > 0.05).


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