surrounded by Douglas-fir forest. This small pond (approximately 

 one-half acre) was netted once on 13 August (Table 7) . 



TABLE 7. — Bats Captured at Kruger Pond. 



CAVES 



Bats were captured at five caves. Four of the caves, Mystery, 

 Little Ice, Four-eared, and Royce, were trapped at least seven 

 times, while Syke ' s Cave was trapped only once. Measurements 

 taken in the caves indicated that temperature and humidity remain 

 constant both within a 24 hour period and between the months of 

 June and September. All of the caves were entered on at least 

 three occasions, but no bats were observed roosting. 



Mystery Cave (T. 8 S., R. 28 E., Sec. 21, Carbon Co., MT; 

 elevation: 2384 m) is located near the south end of East Pryor 

 Mountain on BLM land in Douglas-fir forest. The entrance is 

 approximately 4 m wide and 2 m high with an aspect of 

 approximately 75°. This extensive cave extends over 500 m in 

 depth and possesses many interconnecting passages and rooms. The 

 cave temperature is approximately 3.3° C. The cave is very damp 

 (100% humidity) , with running water and small pools present. 

 Over 700 bats were trapped at this cave on eight nights between 

 23 June and 8 September (Table 8) . 



TABLE 8. — Bats Captured at Mystery Cave. 



Total 633 78 711 



Little Ice Cave (T. 8 S., R. 28 E., Sec. 18, Carbon Co., MT; 

 elevation: 2494 m) is located in Douglas-fir forest on USFS land 



15 



