which there generally was not). With experience, the activity of the 

 bat (cruising, searxdiing, or feeding) and the genus of the bat could 

 be determined by the sound, duration, and intensity of the detected 

 bat echolocations (Fenton 1988, Fenton and Bell 1981). Detections 

 were recorded on field forms by time, frequency monitored, and 

 species (if known or suspected) (See Appendix I for example of field 

 form used ) . 



Tenperature in degrees fahrenheit was recorded in most adits and cave 

 using a Taylor Pocket thermaneter . Relative humidity was recorded at 

 these sites using a Princo Pocket sling psychrometer . 



Bat identification 



Once captured in a mist net or harp trap, bats were carefully 

 removed. Species of the bat, sex, age (juvenile or adult), 

 reproductive condition (females: lactating or non-lactating; males: 

 scrotal or non- scrotal ) , and select measurements (forearm length, 

 tibia length) and other identifying characteristics and measurements 

 such as ear length, pelage ooloraticn, etc., were recorded on field 

 forms. Methods of determining sex, age, and reproductive condition 

 are frotn Anthony (1988) and Racey (1988). Weight was recorded using 

 a Pesola spring scale ( 50g X .5g) and measurements were taken using a 

 dial caliper and recorded to the .5 millimeter. Bats were 

 identified using one of several dichotomous keys. The most useful 

 were: 



