Bat Trapper II
Researchers may live trap an abandoned mine or cave in order to sample the species diversity. A trap made from monofilament fishing line is set up, then we watch the show which sometimes lasting all night.

This video was made in October 2001 at one of the largest known bat hibernation mines in Pennsylvania. A high resolution night vision camera was used with infrared lighting illuminating the abandoned mine.

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File size: 6.1 M ; image size: 240x160