I've just been surprised by a butterfly fluttering around my room. According to the UK butterflies website, it's a Small Tortoiseshell. Reading the page about it, it might have been hibernating in my room all winter and has now decided it's warm enough to emerge. It spent a few minutes flapping wildly at the window and is now settled between the radio and the window. I wonder what it'll do. Should I open the window and encourage it out or just leave it be? I don't regularly open that window at the moment, it's far too cold.
ETA: It's gone now. I don't know where.