It's always fun to watch Blue tits on a bird feeder like this one. They're always darting around, never sitting still, and often (as here) looking really horribly cute. I suspect this is a fairly young bird judging by its fluffiness. Unfortunately the dark conditions (the feeder was beneath quite thick foliage) meant that my old camera struggled somewhat, hence the rather intrusive noise in the dark background. Still, I thought the pose was amusing enough to see past that.