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Northern Prairie Wildlife Research Center

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Wildlife Monographs

Red Fox Predation on Breeding Ducks
in Midcontinent North America

Tables


Table 5. Percentage hens among dabbling ducks found at red fox rearing dens east and west of the Missouri River in North Dakota and South Dakota. Only species with 10 or more individuals of known sex are included.

1968 1969 1970 1971 1972 1973 Combined
Area & Species % Na % Na % Na % Na % Na % Na % Na
West River
Mallard 60 20 71 28 80 5             68 53
Northern pintail 63 8 45 11 100 2             57 21
East River
Mallard 86 22 81 58 81 67 77 26 74 35 87 31 81 239
Northern pintail 80 10 74 109 77 97 67 33 60 47 88 16 73 312
Northern shoveler 67 6 94 34 90 40 100 6 100 10 71 7 90 103
Blue-winged teal 81 21 90 109 79 141 80 41 69 52 71 21 81 385
Gadwall 50 2 82 28 59 32 58 12 55 29 67 18 64 121
American wigeon 50 2 100 12 40 10 100 1 72 25
Green-winged teal 75 4 86 14 73 11 0 1 0 1 67 3 74 34


aTotal sex-identified ducks.

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