Bat surveys on USFS Northern Region land in Montana : 2005 /

Bats surveys on USFS Northern Region lands in Montana : 2007 /

“…As in the previous two years (Hendricks and Maxell 2005;Lenard et al 2007), surveys in 2007 sampled primarily where bats would be expected to concentrate their activity while seeking food and water resources. Some of these sites, especially those used by several bat species, may be useful in the future for monitoring efforts across Forest Districts.…”

Riparian bat surveys in eastern Montana

“…In contrast, a male bias has been noted in samples of Montana bats from upland or forested landscapes (Worthington 1991a, 1991b, Hendricks et al 2000, Hendricks and Maxell 2005. Additional data are needed to determine the extent where this bias might exist, and under what conditions it is evident.…”

“…Knowledge of bats in Montana remains largely based on distribution records (e.g., Nicholson 1950, Hoffmann et al 1969, Swenson 1970, Swenson and Bent 1977, Swenson and Shanks 1979, Shryer and Flath 1980, Foresman 2001, although there are a few published studies focusing on other aspects of the biology of Montana bats (e.g., Jones et al 1973, Hendricks et al 2000. In addition, several agency-funded projects have addressed information gaps that help guide management activities at the BLM Field Office or USFS Ranger District landscape scale (e.g., Worthington 1991a, 1991b, Hendricks and Kampwerth 2001, Hendricks and Maxell 2005. Nevertheless, there are no studies from Montana addressing how bats use forested landscapes of different stand types, ages, and structural complexity (e.g., Thomas 1988, Kalcounis et al 1999, nor studies of the significance of local landscape features to bats concentrated in riparian corridors of prairie regions (e.g., Holloway and Barclay 2000).…”

“…Inventorying and monitoring bat distributions and trends at this scale will place us in a better position to address conservation issues as they arise. To date, none of these objectives has been thoroughly addressed in Montana, although the 2005 survey of selected Districts of the Northern Region of USFS lands (see Hendricks and Maxell 2005) was an admirable pilot effort towards satisfying these objectives.…”

Status of the Western Small-footed Bat (Myotis ciliolabrum) in Alberta /

“…Bogan et al 1996; Cryan et al 2000;Hendricks et al 2004;Hendricks and Maxell 2005). In Montana, just across the Alberta border on the Milk River near Havre, the ratio of males: females was 59:2, despite great effort to find females (C.Lausen, unpubl.…”