include unidentified myotis species, western long-footed myotis (Myotis evotis), silver- 

 haired bat (Lasionycteris noctivagans), big brown bat (Eptesicus fuscus), and possibly 

 Townsend's big-eared bat {Corynorhinus townsendii). Several bat calls were 

 unidentifyable and were recorded as unknovra species. 



Mist netting at eight locations yielded 17 captures of M ciliolabrum (captures = 14) and 

 M evotis (captures = 3). Non-reproductive adult males (12 M ciliolabrum and three M 

 evotis) accounted for all but two captures. Other captures included one adult non- 

 reproductive female and one juvenile male M. ciliolabrum. These limited results suggest 

 that the sites sampled were most likely being used by groups of non-reproductive males 

 as either day or night roosts. 



Database Development 



The MTBMG provided a copy of a database resulting from an inventory of abandoned 

 and inactive mines on BLM lands in southwest Montana. This database contained the 

 mine name, location, map coordinates, and general information regarding mine type and 

 environmental hazards. The database contains a unique identification code for each mine. 

 The MTBMG database and mine locations were imported into Arc View GIS. Other map 

 layers available through the Natural Resource Information System (NRIS) and MTNHP 

 include land ownership, hydrology, elevation and land cover. Mine sites that are 

 currently not in the MTBMG database are being added to the database and assigned an 

 identification code that indicates its appended status. 



Data tables have been constructed to manage data on mine-opening characteristics (e.g., 

 number of openings, size of opening, cover type, etc.), external survey data (i.e., Anabat 

 or mist-net data) and survey weather conditions (temperature, humidity, wind, etc.). Data 

 gathered during the past field season are being entered into the respective data tables. 

 The mine identification code serves to link these data tables to MTBMG database. 



UPCOMING WORK SCHEDULE 



1 . Continue assesssment of data from the past field season. 



a. Complete assessment of tape recordings from ultrasonic monitoring. 



2. Review files on abandoned mines at MT Dept. of Environmental Quality (MT DEQ). 



a. Seek information on the internal structure of abandoned mines in the study 

 area. 



b. Identify additional mines for evaluation 



3. Formulate a list of potential sites for winter/early spring visits for internal survey. 



