YESTERDAY evening I joined a bat survey at Carmarthen on the River Towy, it was mild and quite windless.
Using "bat detectors" or more correctly I used a Heterodyne, and the Bat Conservation Trust guy used a very fancy Frequency division detector and Time expansion recorder.
We detected three species of bat, Noctule, Soprano Pipistrelle, and Common Pipistrelle; effectively one of the largest highest flying bats and the joint two smallest bats.
Obviously no photographs....
A really enjoyable couple of hours
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