activity at a single site, since the recorders used were voice-activated Detectors were 

 sensitive to bats within a minimum range of 20 m. Tapes were returned to the laboratory and 

 analyzed on an IBM compatible PC using an ANABAT II ZCA Interface Module and ' 

 software. Assignment of vocalizations to a particular species of bat was achieved by matching 

 held recordings with a reference set of calls obtained from captured individuals, in addition to 

 matching call characteristics with those available in the current literature. 



