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Impact of Red Fox Predation on the Sex Ratio of Prairie Mallards

Table 6: Incidence of Mallards Found Above Ground at Red Fox Rearing Dens

Table 6. Incidence of mallards found above ground at red fox rearing dens in eastern North Dakota.

Year	Number of dens examined	Number of mallards above ground	Number of mallards per den
1969	103	36	.35
1970	78	28	.36
1971	90	20	.22
1972	96	25	.26
1973	127	28	.22

Previous Section-- Table 5: Estimates of Mallard Spring Breeding Population
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Next Section-- Table 7: Location of Mallards in Food Remains at Excavated Red Fox Dens

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