Hibernation Survey
During the winter, licensed bat workers monitor hibernation sites around the UK and many of them kindly share their findings with the National Bat Monitoring Programme so that we can include the data in the species population trends we produce. So far for winter 2021/22 we have received bat counts from at least 64 volunteers at 291 sites/compartments of sites. The species distributions can be seen by clicking on the links at the bottom of this page.
Barbastelle
Based on the data received from NBMP volunteers so far, barbastelles were found in six sites, 2% of sites monitored.
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Bechstein's bat
Based on the data received from NBMP volunteers so far, Bechstein's bat was found in two sites, <1% of sites monitored.
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Brown long-eared bat
Based on the data received from NBMP volunteers so far, brown long-eared bats were found in 73 sites, 25% of sites monitored.
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Common pipistrelle
Based on the data received from NBMP volunteers so far, common pipistrelles were found in 10 sites, 3.4% of sites monitored.
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Daubenton's bat
Based on the data received from NBMP volunteers so far, Daubenton's bats were found in 97 sites, 33.3% of sites monitored.
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Greater horseshoe bat
Based on the data received from NBMP volunteers so far, greater horseshoe bats were found in 57 sites, 19.6% of sites monitored.
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Greater mouse-eared bat
Based on the data received from NBMP volunteers so far, a single greater mouse-eared bat was found at one site.
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Lesser horseshoe bat
Based on the data received from NBMP volunteers so far, lesser horseshoe bats were found in 76 sites, 26.1% of sites monitored.
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Natterer's bat
Based on the data received from NBMP volunteers so far, Natterer's bats were found in 125 sites, 43% of sites monitored.
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Serotine
Based on the data received from NBMP volunteers so far, serotines were found in three sites, 1% of sites monitored.
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Soprano pipistrelle
Based on the data received from NBMP volunteers so far, soprano pipistrelles were found in five sites, 1.7% of sites monitored.
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Whiskered/Brandt's/Alcathoe bat
Based on the data received from NBMP volunteers so far, whiskered/Brandt's/Alcathoe bats were found in 41 sites, 14% of sites monitored. Whiskered bats identified to species level were present in a further five (<2%) of sites.
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