The findings come from data collected by miniature biologging tags that were attached like backpacks to 20 fringe-lipped bats in the rainforests of Panama. Biologists discovered that the winged hunters tracked comparatively large prey like birds, frogs, and other small mammals by adopting a “hang-and-wait” strategy. Bats spent 89 percent of their time hanging in place, and typically spent less than three minutes flying. An average meal for a fringe-lipped bat weighed about seven percent of its own body weight. Fringe-lipped bats caught their prey about half the time.