Geoffroy's bats primarily live in buildings in the summer. In winter they hibernate in caves and mines. The species occurs mainly in the mountains of North-East Hungary, but few nurseries can be found in the eastern part of the Hungarian Great Plain. These colonies possibly hibernate in the neighbouring Bihar Mountains.

The loss of their feeding habitats, the illumination of the buildings (churches) of the roosts and the disturbance of hibernating sites are threatening this strictly protected species.

Geoffroy's bat (Myotis emarginatus)