Impact of Red Fox Predation on the Sex Ratio of Prairie Mallards
Figure 9: The North American Breeding Range of the Mallard
Fig 9. The North American Breeding range of the mallard, showing the Prairie Pothole Region, where about half of the continental population nests. Map adapted from Johnsgard (1975) and Stewart and Kantrud (1973).
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Next Section-- Figure 10: The Breaking of Virgin Prairie Sod in North Dakota
