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.
| G.L. Rohde (unpublished data) | North Dakota | |
| A.B. Sargeant (unpublished data) | Minnesota | |
| Scott (1943, 1947) | Iowa | |
| Scott and Klimstra (1955) | Iowa | |
| Sheldon (1950) | New York | |
| G.L. Storm (unpublished data) | Illinois-Minnesota | |
| Average | ||
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
