Bats in London
Near the bank of the River Thames at Richmond one evening we watched bats in the dusk. There were two distinct types; one was small, about the same size as I’d “expect” UK bats to be, having seen plenty in country lanes on evening walks before. But the other type was much larger in comparison – probably double the size, though I can only give a relative measurement as it was too dark to guess a measurement properly.
Would anyone be able to hazard a guess about the larger type of bat?
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I have never looked for bats there but Daubenton’s are pretty common and they are 50% heavier than pipistrelles which are the ‘ typical’ uk bat. Daubeont’s skim insects from the water often. Noctules are also fairly common and larger again but they tend to fly quite high.