This lovely fly has recently invaded Europe. Will it fly across the Channel and establish itself in the UK? Is it already here? It is spreading widely on the Continent, so perhaps it is just a matter of time before it pops up in the UK? I could find no records of it, but it…
Darwin’s other big idea (in addition to the theory of evolution by natural selection) was sexual selection. “We are, however, here concerned only with that kind of selection, which I have called sexual selection. This depends on the advantage which certain individuals have over other individuals of the same sex and species, in exclusive relation…
