Their social calls, which are a lower frequency than their foraging calls, can be heard by the human ear. Summer roosts of both common and soprano pipistrelles are usually found in crevices around the outside of often newer buildings, such as behind hanging tiles, soffit and barge or eaves In cluttered habitats such as woodland, the calls become shorter and less slappy with a more rapid repetition rate. Click here to listen to the social call of Nathusius' pipistrelle. The key does not cover social calls. Common pipistrelle Pipistrellus pipistrellus ... of human hearing with the exception of social calls that may be heard by children and some adults with good hearing. Distribution & conservation The common pipistrelle is widely The Nathusius’ produces a sound similar to other pipistrelles but its call is typically below 40Khz whereas the common pipistrelle call is around 45Khz. Nathusius' pipistrelles emit two types of social calls; song-like calls at the mating roost, during flight and when foraging, and cheep-like calls during flight (Pfalzer & Kusch, 2003). In 1999, the common pipistrelle was split into two species on the basis of different-frequency echolocation calls. The soprano pipistrelle was only formally separated from the common pipistrelle (Pipistrellus pipistrellus) in 1999. Pipistrelle Examples Examples of Recorded Sequences • Echolocation Examples • Social Call Examples • Possible Areas of Confusion Q&A Thanks For Attending Today ^☺^ Contact Info: Neil Middleton BatAbility Courses & Tuition Email: neil.middleton@batability.co.uk Mobile: 07877 570590 R Prey was only detected when there was no overlap between the emitted call and the received echo. The two are called common and soprano because the latter echolocates at a higher frequency peaking at 55kHz, compared with the former which echolocates at a peak frequency of 46kHz. The call of the Common Pipistrelle sounds like a series of clicks turning into ‘wetter’ slaps with the deepest sounding slap being heard at about 45kHz. Call sounds like a prolonged warbling or whistling ... Common Pipistrelle Note that pipistrelle calls are very variable. The common pipistrelle uses a call of 45 kHz, while the soprano pipistrelle echolocates at 55 kHz. With a bat detector ... the peak intensity of the call. Among the best known, most widespread and most familiar of vesper bats are the pipistrelles. Since the two species were distinguished, a number of other differences, in appearance, habitat and food, have also been discovered. The Common Pipistrelle at about 55kHz.