Field Survey
Based on the data received for 2023, 106 volunteers carried out the Field Survey at 179 sites. This survey involves walking a triangular transect within a 1km square and counting noctule, serotine, common pipistrelle and soprano pipistrelle passes.
Noctule and Leisler's bat
Noctules were recorded at 103 sites in Great Britain (57.5% of sites surveyed). Leisler's were recorded at two out of four sites in Northern Ireland.
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Serotine
Serotines were recorded at 45 sites (22.4% of sites surveyed).
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Common pipistrelle
Common pipistrelles were recorded at 160 sites (89.4% of sites surveyed).
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Soprano pipistrelle
Soprano pipistrelles were recorded at 110 sites (61.5% of sites surveyed).
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