The Leisler's bat is a rare animal for the Netherlands. For years, one was only seen every once in awhile. In 2009, the first nursing colony in 20 years was found in a hollow tree on an estate in Twente. Leisler's bats assumably migrate great distances between their summer and winter homes, some perhaps more than 800 kilometers. On Texel, an adult female was found in a shed in September 1979, on the Ploelanderweg in the woods. She died during migration and is now part of the museum collection at Naturalis in Leiden.