The Utility of Break-Back Traps in Population Studies of Small Mammals

Abstract
The experiments described were designed to test the utility of "break-back" or snap-traps in investigations requiring a reliable method for capturing small mammals. Under the conditions of the experiments, numbers of animals taken were not related to numbers of animals passing over the area where the traps were located. Failure of traps to take animals actually present may be explained by ineffectiveness of bait or by the tendency of animals to avoid new and strange objects.

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