104451 Natterer’s Bat Myotis nattereri Wingspan 25-30cm Medium-sized bat with rather large ears and long tragus. Adult has medium-length fluffy fur, yellowish brown above and greyish white below. Face is reddish, almost bald and rather dog-like. Wings are broad. Echolocates in 35-80 kHz range. Widespread. Favours woodland margins, hedgerows and parkland with mature trees. Emerges from roost an hour after sunset and feeds throughout night. Wingbeats are rather slow; hovers occasionally. Roosts in tree holes, buildings and under bridges in summer, hibernates in canal tunnels and mines.