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

Table 9: Number of Dens Used by Red Fox Families to Rear Pups

Table 9. Number of dens used by red fox families to rear pups.

Source	Location(s)	Number(s) of dens per family
G.L. Rohde (unpublished data)	North Dakota	4, 5, 7, 9
A.B. Sargeant (unpublished data)	Minnesota	3, 4, 4
Scott (1943, 1947)	Iowa	3+, 5
Scott and Klimstra (1955)	Iowa	3, 4, 5
Sheldon (1950)	New York	3+
G.L. Storm (unpublished data)	Illinois-Minnesota	3+, 7, 8
Average		4.8+

Previous Section-- Table 8: Proportion of Mallards Taken by Red Foxes That are Brought to Rearing Dens
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Next Section-- Table 10: Sex Ratios of Adult Mallards Found at Red Fox Dens

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