I've seen these around from time to time, but finally managed to get a
decent picture. With images;
cc-by-sa on
everything.
Aglais io, the (European) Peacock Butterfly. The males fight
over territory, and this is probably mating season.
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Or zoomed in, to avoid you having to load the full image:
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Like most butterflies, they're nectar drinkers, and this one is
feeding from a grape hyacinth.
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