The pages on this site offer various audio and audiovisual resources relating to research done by the Bat Ecology and Bioacoustics Lab at Bristol University into the ecology, behaviour and conservation biology of bats. On offer (all freely available) are an interactive resource called Biosonar: Seeing with Sound, sounds files (in WAV format) of the Echolocation Calls of British Bats, a series of videos ilustrating bats’ acoustic blindness, and a number of short video sequences showing different kinds of bat behaviour.