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| The Secret Life of Bats : Daubenton's Bat | |
| Daubenton's bat, Myotis daubentonii: An example of a frequency modulated call through a bat detector. Each "click" starts at high frequency and sweeps down low. The quality and spacing of the clicks help to identify this species. | |
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| © Fathom 2002; with the permission of Phil Richardson; with the permission of Phil Richardson | |