Non-bat Sounds
A whole world of ultrasound opens up when a bat detector is switched on. To distinguish bat and bat species it is important to recognise non-bat species. The following minimally edited recording was made in a small nature reserve in North Devon, UK, in September. None of these calls were audible normally.
However, the cheat here is that the last sound is from a bat which is making a social call as it flies.
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You can download the clip or download a player to play the clip in your browser. Crickets, unidentified mammal, and a bat social call recorded on a heterodyne detector set to 19 kHz - 379Kb Read more about this topic: Bat Species Identification Famous quotes containing the word sounds:“While we were thus engaged in the twilight, we heard faintly, from far down the stream, what sounded like two strokes of a woodchopper’s axe, echoing dully through the grim solitude.... When we told Joe of this, he exclaimed, “By George, I’ll bet that was a moose! They make a noise like that.” These sounds affected us strangely, and by their very resemblance to a familiar one, where they probably had so different an origin, enhanced the impression of solitude and wildness.” |