Daubenton, brown long-eared, noctule, Nathusius, soprano and common pipistrelle bat. There are 25 bat species present including Bechstein's bat and Kuhl's pipistrelle. The soprano pipistrelle is known to roost throughout Europe in rooftops and houses. The common pipistrelle is a very small species of bat. The site is rich in mammal species including both species of pipistrelle and noctule bat. Males of Racey's pipistrelle bat have a narrow, egg-shaped glans penis. The pipistrelle is likely an open forager. The common pipistrelle weighs only and has a wingspan ranging of . This could be due to the large size of the colonies in the Soprano pipistrelle. It is also larger than the common pipistrelle with broader wings. Its common name was thus the "eastern pipistrelle". The fur is longer and less uniformly-coloured than the common pipistrelle. The Christmas Island pipistrelle declined dramatically from 1990. The common pipistrelle is considered least concern by the IUCN. "Pipistrellus raceyi" is a small to medium-sized pipistrelle.