Home is where you hang your bat: winter roost selection by prairie-living big brown bats

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dc.contributor.authorKlug-Baerwald, Brandon J.
dc.contributor.authorLausen, Cori L.
dc.contributor.authorWillis, Craig K.R.
dc.contributor.authorBrigham, R. Mark.
dc.date.accessioned2019-07-04T18:13:04Z
dc.date.available2019-07-04T18:13:04Z
dc.date.issued2017
dc.description.abstractInformation on the roost requirements of small, temperate-zone hibernating bats, which can spend up to 8 months in hibernation, is crucial to their conservation. We studied male big brown bats (Eptesicus fuscus) in southeastern Alberta, Canada, to investigate the physical and microclimate characteristics of hibernacula used by this species in a prairie river valley (Dinosaur Provincial Park, DPP). We monitored roosting behavior and movement, and also compared microclimate conditions (temperature and humidity) within these crevice hibernacula to those of random crevices within the study area, and to conditions inside 4 known cave hibernacula in central and northern Canada. Our results show that male E. fuscus in DPP use rock-crevice hibernacula with less variable temperatures than ambient and random crevice temperatures, with evidence of winter roost fidelity within and between years. Bats used only 3 hibernacula and, although mid-winter flight is common in our study area, there was little movement by bats between hibernacula. Rock-crevice hibernacula were warmer and more thermally stable than other available crevices in DPP, and drier but not necessarily colder than known cave hibernacula elsewhere. Our study is the first to examine crevice roost selection by bats during winter, and suggests that specific hibernacula are important for individual bats, despite the fact that numerous crevices are available.en_US
dc.description.authorstatusFacultyen_US
dc.description.peerreviewyesen_US
dc.description.sponsorshipNSERC, Wildlife Conservation Society Canada, Alberta Conservation Association, Alberta Parksen_US
dc.identifier.citationJournal of Mammalogy, 98(3):752–760, 2017en_US
dc.identifier.urihttps://hdl.handle.net/10294/8905
dc.language.isoenen_US
dc.publisherAmerican Society of Mammalogistsen_US
dc.subjectaridity, bats, crevices, Eptesicus fuscus, hibernacula, microclimate, roost selection, winteren_US
dc.titleHome is where you hang your bat: winter roost selection by prairie-living big brown batsen_US
dc.typeArticleen_US
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