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Social Calls of the Bats of Britain and Ireland 2nd edition - Middleton, Froud, French - 9781784273781 – Pelagic Publishing
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Stream Bat Recordings - with the Anabat SD2 - Ultrasonic Echolocation Detector by RichardDevine | Listen online for free on SoundCloud
![Bat Conservation Trust on Twitter: "We are creating a bat sound library for research, training and learning. A much needed resource which will be launching very soon. Keep an eye on the @_ Bat Conservation Trust on Twitter: "We are creating a bat sound library for research, training and learning. A much needed resource which will be launching very soon. Keep an eye on the @_](https://pbs.twimg.com/media/FC8_U68XEA0DWGA.jpg:large)