They listen to the echoes when sounds bounce off the surroundings. At a station in the exhibition you can hear the echo from your own voice. The bat's large outer ears are testimony to their excellent hearing. Its ears amplify the weak sound of the echo. You can test the enlarged ears at the exhibition to see if they affect your hearing.
Many female bats live together in colonies when they are raising their young.
There can be hundreds of young bats in a square metre in some colonies. You would think that it would be difficult for a female to find her offspring after a hunting trip. But her sense of sound and smell do not fail her. At the exhibition you get to help a female bat to find her young in an overcrowded colony. In the exhibition there is a skeleton of a bat on the same scale as that of a human.