State of Alaska
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Alaska Department of Fish and Game

Alaska Bat Monitoring Program
Acoustic Monitoring

Acoustic monitoring device for bats

All of the bat species that reside in Alaska use echolocation to locate and capture their prey. Bat detectors convert the high-frequency calls that bats make to a lower-frequency sound within the range of human hearing, allowing us to “eavesdrop” on bats while they forage.

A new nationwide program for monitoring bats is starting up in 2014. The program will use acoustic driving transects to monitor population trends. Transects are driven at 20 mph, with a bat detector mounted on the roof of the vehicle to record the bat calls and a GPS to record the location. We are recruiting volunteers to help us conduct these surveys once a month from April through September.

Contact us if you are interested in driving an acoustic transect in your community.

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