Leisler’s Bat

Nyctalus leisleri

LISTEN TO THE BAT

Introduction

The Leisler’s bat is similar to the noctule, but smaller, with longer fur – particularly around the shoulders and upper back. This gives it a lion’s mane appearance. Formerly known as the hairy-armed bat, Leisler’s are naturally a forest species, while also found in suburban areas where they may be attracted to insects around street lights.

Head & body length:

5 – 7 cm

Forearm length:

3.8 – 4.7 cm

Wingspan:

26 – 32 cm

Weight:

12 – 20 g

Average colony size:

20 – 50

Lifespan:

up to 10 years

Colour:

Golden tipped or reddish-brown fur that is darker at the base.


Conservation Status

Relatively scarce

Roost sites

tree-holes and old or new buildings

Diet

moths, beetles, flies and caddis flies

Echolocation

peak at 25kHz