Caves and adits were located by consultation with Forest Service 

 personnel, knowledgeable "cavers," "locals," and the available 

 literature, particularly Campbell's (1978) Caves of Montana. 



During the second year of study, the criteria of the first year 

 were modified somewhat. Though the four criteria above were 

 still operable, a priority was to be given to: 



1 ) re-visiting those sites that had high bat densities in 

 1991; 



2) locating new sites throughout the forest to sample in 

 order to test the findings of 1991. 



Once a general area was selected, the specific site was chosen 

 that appeared to have potential roosting sites nearby, such as 

 older trees, fractured rock, old buildings, or known caves or 

 adits. If water was nearby, specific sites to set up mist nets 

 were generally selected that crossed the slowest moving stretches 

 of streams or pools. 



Caves and Adits 



When a cave or adit was located, it was searched for evidence of 

 bat use (bats, droppings, characteristic odor) and the location, 

 extent, potential for bat use, temperature, humidity, and other 

 pertinent data were described on field forms. 



