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  1. HermitIbis

    Bechsteins or a faulty detector?

    Which bat detector are you using? A species more likely in Wales may be soprano pipistrelle, for which 50.1 khz still seems within its normal frequency range. Looking at maps, Bechstein's would not to be expected there. Also, isn't it more typical for pipistrelles to see them hunt in a group of...
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