Not a parrot

This afternoon a friend posted this link. I thought a 50 foot parrot would make a great blip so cycled over to the South Bank on my way home. But it wasn't there. Where would you hide a 50 foot dead parrot? Or maybe it wasn't dead...

I liked all the different greys in this photo in contrast to the blue on the boat. It was actually a really sunny day today even though it doesn't look like it!