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Summer Survey Summary 2017

2017 was another successful year for the monitoring programme, with at least 770 volunteers taking part in summer surveys. We would like to thank everyone who has helped collect this important information, which enables us to produce population trends for the UK's bat species.

Roost Count maps & summary:

Roost Count summary of results

Brown long-eared bat

Greater horseshoe bat

Lesser horseshoe bat


Natterer's bat


Additional species roost counts

(Bechstein's bat, Brandt's bat, grey long-eared, Leisler's bat, noctule, whiskered bat)


Field Survey maps


Waterway Survey map

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Bat Helpline

0345 1300 228