Natterer’s Bat

Myotis nattereri

LISTEN TO THE BAT

Introduction

Natterer’s bat is a medium-sized species. The ears are narrow, fairly long and slightly curved backwards at the tip. The inner lobe of the ear (the tragus) is long, narrow and sharply pointed. A characteristic feature of this species is a fringe of very stiff bristles along the trailing edge of its broad tail membrane. Its rather pinkish limbs give rise to its old name of ‘red-armed bat’. Natterer’s bats tend to forage in broad-leaved woodland and along tree-lined rivers and ponds.

Head & body length:

4 – 5 cm

Forearm length:

3.6 – 4.3 cm

Wingspan:

24.5 – 30 cm

Weight:

7 – 12 g

Average colony size:

50 – 100

Lifespan:

up to 20 years

Colour:

Light buff-brown on black fur, white underneath and a bare, pink face.


Conservation Status

A common mammal

Roost sites

old stone buildings

Diet

Flies, small moths, lacewings, beetles, wasps and spiders

Echolocation

can best be heard at 50kHz