The roof spaces and wall crevices of Old Pennar School have long been roosts for bats.By Barracuda1983 (Own work) via Wikimedia Commons
This YouTube Video, although of Pipistrelles in London, makes fascinating listening. This is the recording of the echo-location sounds that a pipistrelle makes when in flight. The "bat detector" used to record these sounds allows us to hear echo-location pings of the bat, which are in reality above the frequency range of adult hearing. Notice the "raspberry" like squirts of sound as the bat closes in on its prey! See below this for more links.
The links below give information on how bats are protected and best practice in bat conservation:
http://www.bats.org.uk/index.phptake a look at their "Publications and Leaflets" pages in particular.
UK Government Bat Legislation
from DEFRA
The Common Pipistrelle in Wales
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