Four seen soon after sunset hunting over parkland
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Wonderful photo. The silhouette is right for noctule but it could also be a number of other bats.
Hunting over open parkland is indicative of noctules chasing cockchafers though. Did you have any other reason for thinking they were noctules?
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Lat/Lng: 52.207365053682, -1.1719362437725
OS grid ref: SP566568