Field Survey
Based on the data received for 2019, 178 volunteers carried out the Field Survey at 202 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 109 sites (54% of sites surveyed). Leisler's bats were recorded at one site in Northern Ireland​ this year
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Serotine
Serotines were recorded at 41 sites (20% of sites surveyed)
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Common pipistrelle
Common pipistrelles were recorded at 186 sites (92% of sites surveyed)
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Soprano pipistrelle
Soprano pipistrelles were recorded at 129 sites (64% of sites surveyed)
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