Foraging sites are found where there is an abundance of insects. 

 Thomas and West (1991) reported that, although old-growth stands 

 of timber had dramatically higher activity than other forest 

 stands, Myotis species did not appear to forage there. In some 

 cases, they reported, feeding rates were dramatically greater 

 over water. Though insect density was similar in forested and 

 lacustrine habitat, Lunde and Harestad (1986) found bat activity 

 75 times greater in the lacustrine habitat. They reported no bat 

 activity in cutover forest though insects were abundant in that 

 habitat. 



Cave and adit surveys 



One cave and several mine sites were surveyed for evidence of bat 

 use in 1992. The cave, near the Crater on Pikes Peak Creek, was 

 also searched in 1991. No evidence of bat use was found in the 

 cave, though one silver-haired bat was captured at the mouth of 

 the cave in 1991. This cave has not been searched in the fall 

 for evidence of swarming, or in the winter for evidence of use as 

 a hibernaculum. As it is a rather small cave it is not a likely 

 hibernaculum, especially for bats such as Myotis species that 

 need cold, stable temperatures and high humidity. 



The Douglas Creek mines, on private property adjacent to the 

 Deerlodge National Forest southeast of Drummond presently gated 

 so that bats can easily enter and exit. They are apparently 

 deep, cool adits that may be used as hibernacula. They were not 



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