Protecting metal wood duck houses from raccoons
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Published source details
Eaton R.L. (1966) Protecting metal wood duck houses from raccoons. Journal of Wildlife Management, 30, 428-430.
Published source details Eaton R.L. (1966) Protecting metal wood duck houses from raccoons. Journal of Wildlife Management, 30, 428-430.
Actions
This study is summarised as evidence for the following.
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Use artificial nests that discourage predation Action Link |
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Use artificial nests that discourage predation
A trial in captivity in Illinois, USA, in the 1960s (Eaton 1966) found that raccoons Procyon lotor could enter metal wood duck Aix sponsa houses (cylindrical metal houses with a 33 cm cone on top and a 10 cm circular entrance hole) more easily if the cone on top of the house was increased beyond the standard 33 cm. However, if the cone was extended to provide a 7.6 cm overhanging roof and the distance between entrance hole and the roof was increased from 30 to 60 cm, then none of the five raccoons tested could access the nest hole. Reducing the size of the entrance hole to 8.9 x 7 cm also prevented all raccoons from entering, but the authors warn that it is not certain whether wood ducks would use such entrances.
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