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Nest Structures for Ducks and Geese

Mallards
Constructed Islands

Predator-free islands can provide safe nesting sites for mallards and high nest densities have been observed in some cases. The specifications for constructing islands are the same as those described in the section "Canada Geese - Islands" except that the distance from shore should be at least 150 feet, and preferably 300 feet where possible, so that islands are inaccessible to most nest predators like raccoons and fox (Figure 1).
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