It's a Monarch (also know as Milkweed due to that being the plant of choice for the caterpillars) butterfly. It occasionally appears in this country (and I think it's the biggest butterfly native to the UK).
(yes, I used to breed butterflies - although never actually Monarchs)
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Date: 2006-03-04 09:48 pm (UTC)(yes, I used to breed butterflies - although never actually Monarchs)
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Date: 2006-03-06 01:48 am (UTC)And you used to breed butterflies? Cool.