21/03/2026
☘The Irish Bat☘
Nyctalus leisleri
ialtóg Leisler
🦇Leisler’s bat is Ireland’s biggest bat. This species has a wingspan of up to 320mm, mushroom shaped tragus, and the shaggy fur, gives a 'lion's mane' appearance on the back.
Why 'The Irish Bat?' Leisler’s bat is rare in Britain and the rest of Europe but it is relatively common here. For this reason the Irish population of Leisler’s bats is considered of International Importance! 🌍
Leisler's bats are found roosting in buildings although 13% of its roosts recorded in Ireland have been in trees.
They have a distinctive level flight at greater heights than the other Irish species, from which it dives down after dung flies and beetles. It can be seen soon after sunset flying over open spaces such as parks and fields. It is one of the first bats to emerge in the evening and is quite large, so the Leisler’s bat may be confused with swifts.
BatLife Europe has named Leisler's bat as Bat Species of the Year 2026–2027.
Leisler’s bat is monitored by our Car-based Bat Monitoring Scheme. Find out how you can get involved and what else you can do to help our
👉 www.batconservationireland.org
🍀Lá Fhéile Pádraig sona daoibh ☘
Happy St Patrick's Day!
📸 Thanks to Paul Van Hoof