Saw this out of the corner of my eye on leaving work this morning. I was walking in the other direction but just gave the lock a quick glance from 200 yards or so away, and thought I saw what looked like a Heron land on the cutting. So I strolled up there and took a peek. Pity I didn't have Anna's Dad's camera with me, as I might have been able to take a good shot with the bigger lens.
This phone camera handles macro shots well... but not long distance stuff.
Click the photo to reveal a bit of a 'pixellated heron' (not penguin I'm afraid, ma).