would be expected) and left in place overnight; usually one cassette tape was sufficient to record 

 activity at a single site. Detectors were sensitive to bats within a minimum range of 20 m. 

 Recorded 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 field recordings with a reference set of calls obtained 

 from captured individuals, in addition to matching call characteristics with those reported in 

 current literature. 



