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Acoustic Evidence Of Bats Using Rock Crevices In Winter: A Call For More Research On Winter Roosts In North America, Cliff A. Lemen, Patricia W. Freeman, Jeremy A. White
Acoustic Evidence Of Bats Using Rock Crevices In Winter: A Call For More Research On Winter Roosts In North America, Cliff A. Lemen, Patricia W. Freeman, Jeremy A. White
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
The Northern Long-eared Myotis (Myotis septentrionalis) is known to hibernate in mines and caves, often using cracks within these hibernacula as roost sites. We hypothesized that M. septentrionalis might use deep cracks in rock outcrops for hibernation as well. To test this hypothesis, we placed acoustical bat detectors near rock outcrops away from any known mines or caves during winter in Nebraska. We documented calls of M. septentrionalis as well as Perimyotis subflavus and Eptesicus fuscus in December near rock outcrops, which suggests that individuals of all three species were hibernating in rock crevices in winter. Of the …
Winter Activity Of Myotis Septentrionalis: Role Of Temperature In Controlling Emergence From A Hibernaculum, Cliff A. Lemen, Patricia Freeman, Jeremy A. White
Winter Activity Of Myotis Septentrionalis: Role Of Temperature In Controlling Emergence From A Hibernaculum, Cliff A. Lemen, Patricia Freeman, Jeremy A. White
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
We acoustically monitored a small mine in southeastern Nebraska known to be a hibernaculum for the Northern Long-eared Myotis (Myotis septentrionalis) for two winters (2014-2015 and 2015-2016). Some M. septentrionalis emerged on nights with mild temperatures throughout both winters. There was an 89% probability of detecting this species when temperature at sunset was >5°C. Our results indicated that acoustical surveys outside mines or caves in winter, particularly on nights with mild temperatures, are an effective method of identifying hibernacula of M. septentrionalis and potentially other species without disturbing individuals by entering the hibernaculum or by netting individuals as …
Maternity Colony Of Northern Long-Eared Myotis (Myotis Septentrionalis) In A Human-Made Structure In Nebraska, Rachel M. Stein, Jeremy A. White
Maternity Colony Of Northern Long-Eared Myotis (Myotis Septentrionalis) In A Human-Made Structure In Nebraska, Rachel M. Stein, Jeremy A. White
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
The Northern Long-eared Myotis (Myotis septentrionalis) occurs across eastern North America, and its range extends west into the Great Plains of the United States. Summer roosts of M. septentrionalis in the Great Plains are not well documented. Herein we describe a maternity colony of M. septentrionalis using small, elevated structures (i.e., cabins) in southeastern Nebraska. Cabins were in a small parcel of upland deciduous forest about 1.6 km from the Missouri River. The maternity colony was observed roosting in a space between the outer and inner walls of three different cabins from 21 June to 8 October 2014. …