Townsend, Montana. 



Intense bat activity was encountered at a small pool in the 

 canyon of Avalanche Gulch just after dusk on the evening of 

 July 14, 1992. A total of 37 bats were captured. Among 

 these were 27 Little brown bats (Myotis lucifugrus), six Big 

 brown bats (Eptesicus fuscus) , one Fringed myotis (Myotis 

 thysanodes), one Long-eared myotis (Myotis evotls), one 

 Small-footed bat (Myotis ciliolabrum) , and one Townsend 's 

 big-eared bat (Plecotus townsendli) . All but the last bat 

 were males, and most were adults. The Townsend ' s big-eared 

 bat was a non-lactating adult female. Biological 

 information on these bats is presented in Table 1. 



Three bats, all of different species, were captured on 

 White's Gulch the night of July 15. These were an adult 

 male Little brown bat, an adult female non-lactating Long- 

 legged myotis (Myotis volans), and an adult female lactating 

 Small-footed myotis. Biological information on these bats 

 is shown in Table 1. Only one Myotis was recorded during a 

 one hour walking transect (21:35 to 22:35) through the 

 canyon using an ultra-sonic bat detector. 



Two nights were spent mist-netting over small pools in 

 Hellgate Canyon (July 18 and July 28). Numerous bats were 

 observed approaching and avoiding the mist-nets, which were 



