It is late at night, and we are silently watching a bat in a roost through a night-vision camera. From a nearby speaker comes a long, rattling trill. Cane toad’s rattling trill call. The bat briefly ...

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P. kuhlii above a spectrogram of its echolocation sequence. Source: Eran Amichai, used with permission. Many bats navigate using echolocation—emitting high-frequency sound pulses and analyzing the ...

Common big-eared bats eat relatively large insects, such as katydids. Christian Ziegler via Wikimedia Commons under CC BY 2.5 Common big-eared bats are remarkable hunters. In 2019, bat ecologist Inga ...