echolocations ( Fenton 1988, Fenton and Bell 1981). 

 Detections were recorded on field forms by time, frequency 

 monitored, and species (if known or suspected). 



Bat identification 



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

 carefully removed. Species of the bat, sex, age (juvenile 

 or adult )( Anthony 1988), reproductive condition (females: 

 lactating or non-lactating; males: scrotal or non- 

 scrotal ) ( Racey 1988), and select measurements (forearm 

 length) and other identifying characteristics and 

 measurements such as ear length, pelage coloration, etc., 

 were recorded on field forms. Weight was taken using a 

 Pesola spring scale ( 50g X 0.5g) and measurements were taken 

 using a vernier caliper and recorded to the nearest tenth 

 millimeter. Bats were identified using one of several 

 dichotomous keys. The most useful were: 



Bats of America Barbour and Davis 1969 



The Mammals of Montana Hoffman and Pattie 1968 



Handbook of Canadian Mammals van Zyll de Jong 1985 



Most bats were released after data was recorded, though if 

 there was a question of identification, or if the bat was 

 considered unusual for that locality or habitat, the bat was 

 collected to be verified later by a competent authority. 



