SOUNDS: Most sounds produced by whiskered bats are above the level of human hearing, although occasionally bats may be heard chirping from the roost, particularly just before emergence. With a bat detector (heterodyne), frequency modulated sweeps similar to Daubenton's and Natterer's bats are heard, that are strongest at 45kHz. In comparison to Daubenton's bats, whiskered bats emit pulses with a much more irregular rhythm.

Click to hear echolocation calls of the Whiskered bat slowed down 10 times

© Jon Russ 2001. Text refereed by Angela Ross & Lynne Rendle.

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