Pipistrelles are the smallest British bat. It was recently discovered that there are actually three species of Pipistrelle bat formerly grouped together as Pipistrellus pipistrellus. All three (Common, Soprano and Nathusius) are very similar but differences in the frequency of the echolocation calls and genetic differences distinguish them. The common pipistrelle uses a call of 45 kHz.

Soprano Pipistrelle and Nathusius Pipistrelle

Most British bats are very hard to identify in flight. Even in the hand, the Pipistrelle species cannot be readily separated and sound evidence from their echo-location is needed.. The Common Pipistrelle uses a call of 45 kHz.

Pipistrelles roost in trees and under external features of buildings, such as hanging tiles and soffits. They feed along woodland edges, in open woodland, suburban gardens, marshes and over water.

Pipistrelles are active between March and November.

An individual can eat up to 3000 insects a night. Hibernation occurs in crevices in buildings and trees as well as in bat boxes.

Widespread in Britain, but numbers have declined in recent years.

Fairly frequent in Leicestershire and Rutland.