NBMP Winter Hibernation Counts

Licenced bat workers carry out surveys of hibernation sites from December to March each year.

NBMP Roost Hibernation results for Somerset

The group has been carrying out hibernation counts for many years, and the most recent results are below.  The highest number of roosts counted in recent winters was 2018-19.

Winter 2021-22 results

The hibernation roost counts are down to one-third of the previous numbers of sites counted, and seem to be in a post Covid lull.

Full details on the BCT website.

Winter 2020-21

Hibernation counts mostly did not take place due to Covid.

Winter 2019-20 results

Winter 2018-19 results

Winter 2017-18 results

More results on BCTs website