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 2018/19 we have received bat counts from at least 98 volunteers at 542 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 nine sites, 2% of sites monitored.

Soprano pipistrelle

Hibernation Survey

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

Nathusius' pipistrelle

Hibernation Survey

Based on the data received from NBMP volunteers so far, Nathusius' pipistrelles were not found during the winter 2018/19 Hibernation Survey.

Barbastelle

Hibernation Survey

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

Bechstein's bat

Hibernation Survey

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

Brown long-eared bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, brown long-eared bats were found in 114 sites, 21% of sites monitored.

Daubenton's bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, Daubenton's bats were found in 150 sites, 28% of sites monitored.

Greater horseshoe bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, greater horseshoe bats were found in 113 sites, 21% of sites monitored.

Lesser horseshoe bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, lesser horseshoe bats were found in 171 sites, 32% of sites monitored.

Natterer's bat

Hibernation Survey

Based on the data received from NBMP volunteers so far, Natterer's bats were found in 185 sites, 34% of sites monitored.

Noctule

Hibernation Survey

Based on the data received from NBMP volunteers so far, noctules were found in one site, <1% of sites monitored.

Serotine

Hibernation Survey

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

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 58 sites, 11% of sites monitored. Whiskered bats identified to species level were present in a further nine (2%) of sites.

Greater mouse-eared bat

Hibernation Survey

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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