Nathusius's pipistrelle  (Pipistrellus nathusii)

Nathusius's pipistrelle is a small bat, with long wings (2). It was not known to breed in Great Britain until as recently as 1997 (8). The fur on the back is reddish brown during summer and moults to a darker brown in winter. The belly is a lighter, yellowish-brown throughout the year (2). The wing membranes, tail and short triangular ears are blackish-brown (2).