After he retired, he decided to act on this fascination and built a simple bat detector. The simple bat detector uses frequency division to lower the bat’s chirping to a frequency we can hear.

But thanks to bat detectors, we can still pick up on it, and [Marcel] recently built a heterodyne bat detector himself. The bat detector (and an insight to the beauty of German language ...

A now completed government project to survey the local bat population has "revolutionised" the understanding of the mammals, organisers have said. The Bailiwick Bat Survey was commissioned by the ...

but this guide outlines key details to look out for to identify five of our most common species, including echolocation calls (high-pitched sounds that bats use to navigate and hunt) for those with ...