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Want to decode the secret world of bats? Join a bat‑acoustic survey led by an endangered‑species bat biologist! We can't hear bats echolocating, but we can record their calls and use software to determine what species are making those calls. We will use bat acoustic detectors to record bat calls and see in real time what bats are flying around us and using the area. Bring all your batty questions and a headlamp if you have one! No experience needed, everyone is welcome.

This is a drop-in program, no registration is required. Questions? Contact [email protected] or call (952) 854-5900 (press 1 to reach Visitor Services).

Date and Time: Friday September 12th, 2025 from 7-9pm

Location: Meet us in the auditorium at the Bloomington Visitor Center.



Registration Information: There is no registration. This is a drop-in event.

Activity Level: The first portion of the program will be spent indoors going over bat species details and then we will go on a short walk on paved grounds using sonar devices. The pace of the walk is slow and easy. The program will be led by two staff.

What to Bring: Comfortable walking shoes and comfortable clothing. Bug spray is recommended and a headlamp if you have one

Accessibility: Accessibility at Bloomington Visitor Center:

Restrooms and water fountains are located inside the visitor center. Handicap parking and dropoff available. Visitor center is flat aggregate or carpeted flooring with ramps to access all areas. There are benches and rest areas around the visitor center. Trailheads are a 0.1-0.2 mile distance from the parking lot.

The U.S. Fish and Wildlife Service is committed to providing access to these events for all participants. Please direct all requests for sign language interpreting services, close captioning, or other accommodation needs at least ten business days before the event to Oscar Hernandez at [email protected].