Leisler’s Bat

Leisler’s bats primarily inhabit woodlands but also occupy parklands and urban areas that meet all their habitat needs.

Identification

The Leisler’s bat is a medium-sized species and the largest bat found in Ireland. Adult head and body lengths can reach up to 7 cm, with a 4.5 cm tail. This bi-colored species features black to brown fur on the back and a yellowish underbelly, with long, shaggy fur on the back and shoulders. Their wings are long, narrow, and pointed, suited for fast flight, with black furred membranes and a wingspan up to 32 cm. In autumn, adults can weigh up to 20 grams, slimming down to 15 grams after emerging from winter hibernation.

More details can be found at https://www.conserveireland.com/mammals/leislers_bat.php.