Mammals
Leisler's Bat
Nyctalus leisleri · also called lesser noctule
Over an Irish hedgerow in the evening light, Leisler’s bat powers by on narrow wings, a smaller cousin of the noctule that is far more common here than anywhere else nearby.
Overview
Leisler’s bat, Nyctalus leisleri, is a Least Concern bat found across Europe, parts of North Africa, and western Asia. Its fast high flight, tree-hole roosts, and special importance in Ireland make it one of the most notable bats of western Europe.
A bat with an Irish stronghold
While Leisler’s bat is rare in Britain, Ireland holds some of the largest populations in Europe, giving the country a special responsibility for the species.
Status
Least Concern, widespread overall, though declining in parts of its range.
Leisler's Bat: common questions
Why is Leisler's bat called the lesser noctule?
It looks like a smaller version of the noctule, which is a larger bat of similar build.
Where is Leisler's bat common?
It is common in Ireland, which holds some of the largest populations in Europe, but is scarce in Britain.
Where does Leisler's bat roost?
It roosts mainly in tree holes, and also uses bat boxes and buildings.
Where is Leisler's bat found?
It lives across Europe, parts of North Africa, and western Asia.