were recorded during the 1996 inventory: Townsend's Big-eared Bat, Big Brown Bat (Eptesicus 

 fuscus), Hoary Bat (Lasiurus cinereus), Silver-haired Bat (Lasionycteris noctivagans), Western 

 Small-footed Myotis (Myotis ciliolabrum), Western Long-eared Myotis (M evotis), Little Brown 

 Myotis (M lucifugus), Long-legged Myotis (M. volans). The Silver-haired Bat was the only 

 species determined solely by electronic methods. 



In this report, I discuss the results of additional surveys conducted in 1997 and 1998 by 

 MTNHP. Specifically, I present the results of a) three counts of hibernating bats using Azure 

 Cave, and b) two sessions of autumn netting at the mouth of Azure Cave. I combine the results 

 of these surveys with previous data to formulate a more complete picture of seasonal use, species 

 composition, and long-term population trends of bats using the cave as a hibernaculum. I also 

 present results from inspections of other potential roosts in the Little Rocky Mountains, and 

 discuss their significance for bats relative to that of Azure Cave. 



