This one demonstrates the innate behaviour of bats in locating water.
(Double-click the arrow, then enlarge the screen)
Although this is not about British bats, the ecology is the same. It certainly gives a good deal of background knowledge for somebody who knows nothing or not a lot about these fantastic mammals.
By the way, for those of you who think that bats are 'flying mice', I've got some news for you. They're more closely related to humans!!!
Posted by: Steve Halliwell