>So this is obviously not navigation error (exception: neonics?). Are these foragers looking for weak hives to exploit?
My guess is that these bees are finding themselves a long way from home at dusk - perhaps through being caught out by bad weather - and then just joining the nearest colony that they can find. But that is just a guess...
Best wishes
Peter
52°14'44.44"N, 1°50'35"W
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