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Survey Procedures: Drift Fences

Drift fences capture amphibians and reptiles by taking advantage of seasonal movements such as migrations to or from overwintering sites. A drift fence consists of a barrier (i.e. 50-foot length of aluminum flashing or window screening) that is embedded in the ground to guide animals into adjacent funnels or pit-fall traps. These traps also capture small mammals and invertebrates.

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