Mist-net and Mine Surveys 



Mist-netting was conducted on 20 nights at 20 sites between 20 August and 22 September 

 1995, and resulted in the capture of 24 bats of four species ofMyotis (7 M califomicus, 9 M. 

 evotis, 1 M. volans, 7 M. yumanensis). The Yuma myotis (M yumanensis) was expected but 

 previously unreported for the Kootenai National Forest area. 



Twelve mine adits were investigated at 6 sites in 1995. Bats were detected at two of these, 7 

 M. evotis were captured in a mist-net on 26 August at the entrance of the Double Mac Mine 

 (T29N R32W S12NE) in the Libby District, and 1 Corynorhinus {=Plecotus) towmendii was 

 found roosting on 8 September in the upper adit of the Snowstorm Mine (T31N R34W S20SW) 

 in the Three Rivers District. 



Field surveys in 1993 (Roemer 1994) identified six bat species on the Kootenai National Forest 

 (A/, califomicus, M. ciliolabrum, M. evotis, M. lucifiigus, M. volatis, Lasionycteris noctivagaiis). 

 The capture ofM yumanensis in 1995 brings to seven the number of species captured in mist-net 

 surveys on the Kootenai National Forest, and the total number of bat species found on the Forest 

 to ten (Appendix 4). 



Summary 



Field surveys in 1994 and 1995 detected the presence of eight species of bats on the Kootenai 

 National Forest (Appendix 4). Roemer (1994) identified six species, two of which were not 

 detected during the 1994-1995 field surveys (but one of these species fi-om the Forest was 

 represented previously in museum collections). Thus, the total bat fauna documented for the 

 Kootenai National Forest is ten species; four species (M califomicus, M. evotis, M. lucifugus, M. 

 yumanensis) are verified with museum specimens. The ten species present are M. yumanensis, 

 A/, evotis, M. lucifugus, M. califomicus, M. ciliolabrum, M. volans, Lasionycteris noctivagans, 

 Eptesicusfuscus, Lasiurus cinereus, and Corynorhinus townsendii. 



Most or all species are likely to occur on all Forest Districts. Currently, ten species have been 

 noted on the Cabinet District, eight on Fisher River District, six on Fortine District, eight on 

 Libby District, nine on Rexford District, and seven on Three Rivers District (Appendix 4). M. 

 evotis, M. lucifugus, Lasionycteris noctivagans, Eptesicusfuscus, Lasiurus cinereus, and 

 Corynorhinus townsendii have been found on all six Districts. 



All species are likely to breed on the Kootenai National Forest. Each species is known to 

 breed in Canada to the north, or in western Montana to the east and south (Hoffmann and Pattie 

 1968, Hoffrnann et al. 1969, van Zyll de Jong 1985). Lactating females of A/, califomicus, M. 

 ciliolabrum, Kl. evotis, and KI. volans were captured on the Kootenai National Forest during 

 summer in 1993 (Roemer 1994), and lactating A/, evotis were captured in 1995. Which species 

 overwinter on the Kootenai National Forest is unknown. 



The Fnnged Myotis (Myotis thysanodes) may also occur on the Kootenai National Forest, but 

 is considered a rare breeder in western Montana (Hoffrnann and Pattie 1968, Hoffmann et al 

 1969) The Spotted Bat (Euderma maculatum) and the Pallid Bat (Anirozous pallidiis) are found 

 about 230 km to the west in the Okanagan Valley of British Columbia (van Zyll de Jong 1985), 



