An active survey involves monitoring bats while you are present (stationary/walking/driving) while you receive some real-time output (visual or auditory) from the detector. (advantages and disadvantages chart)
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PROCEED TO CHECKOUTAn active survey involves monitoring bats while you are present (stationary/walking/driving) while you receive some real-time output (visual or auditory) from the detector. (advantages and disadvantages chart)