Found during a bat survey on the Glebe on Saturday evening (11-10-08), two species of pipistrelle. Common pipistrelle (Pipistrellus pipistrellus)
Soprano pipistrelle[/b] (Pipistrellus pygmaeus)
Pipistrelles are the commonest British bats.
A single pip can eat 3,000 tiny insects in just one night!
The Soprano pipistrelle is similar to common pipistrelle but can be distinguished by its higher frequency echolocation call.
These two species were only recently described on the basis of the different frequency that they use for echo-location. The Common Pipistrelle has midrange frequency of 45 kHz, while the Soprano Pipistrelle have a midrange frequency of 55 kHz. The two species are sometimes called the 45 kHz pipistrelle and the 55 kHz pipistrelle.
Last edit: 15 Oct 2008 11:02 by Harvey Carruthers.