I only noticed the blackbird sitting on top of the dome of the palm house when it moved after I'd taken the photo. I think I was distracted by the changing colours in the sky or the moon or trying to work out where Venus had gone (it's there, to the right of the dome in amongst the top jet trail).
Lovely crisp and bright day, hard to find anything to complain about, even though it's cold. Although I met plenty of people today who did!