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 2019/20 we have received bat counts from at least 117 volunteers at 500 sites/compartments of sites. The species distributions can be seen by clicking on the links at the bottom of this page.

Common pipistrelle

Hibernation Survey

Based on the data received from NBMP volunteers so far, common pipistrelles were found in 14 sites, 2.8% of sites monitored.

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Soprano pipistrelle

Hibernation Survey

Based on the data received from NBMP volunteers so far, soprano pipistrelles were found in four sites, <1% of sites monitored.

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Barbastelle

Hibernation Survey

Based on the data received from NBMP volunteers so far, barbastelles were found in 11 sites, 2.2% of sites monitored.

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Bechstein's bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, Bechstein's bat were found in three sites, <1% of sites monitored.

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Brown long-eared bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, brown long-eared bats were found in 120 sites, 24% of sites monitored.

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Daubenton's bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, Daubenton's bats were found in 154 sites, 30.8% of sites monitored.

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Greater horseshoe bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, greater horseshoe bats were found in 98 sites, 19.6% of sites monitored.

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Lesser horseshoe bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, lesser horseshoe bats were found in 159 sites, 32% of sites monitored.

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Natterer's bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, Natterer's bats were found in 186 sites, 37.2% of sites monitored.

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Serotine

Hibernation Survey

Based on the data received from NBMP volunteers so far, serotines were found in four sites, 1% of sites monitored.

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Whiskered/Brandt's/Alcathoe bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, whiskered/Brandt's/Alcathoe bats were found in 69 sites, 13.8% of sites monitored. Whiskered bats identified to species level were present in a further nine (<2%) of sites.

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Next: Roost Count