CUSTER, S.D. (AP) — The South Dakota Bat Festival is returning to Custer State Park this weekend for the 10th year.

The South Dakota Bat Working Group is hosting the festival Aug. 15 in the park's Tatanka Theater in Game Lodge Campground.

Biologists will answer questions about bats and there will be a lecture presentation. The festival also includes educational bat displays and crafts for kids.

After the presentation, "bat-detectors" will be used to listen to bats flying overhead in the campground.

Festival organizer Joel Tigner says some of the bats roosting in the Tatanka Theatre often make an appearance by flying around inside the theatre. He says this gives attendees a chance to hear real-time echolocation calls as recorded on the ultrasonic "bat detectors."

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