The real heron

If you wander along a canal towpath, you will often see narrowboats with a range of decorative plants, sculptures and trinkets on their roofs.  When I first saw this heron on top of the boat I assumed this was also a sculpture - if a rather large one.  But then I saw its feathers blowing in the breeze and a slight movement of the head.  I don't think it would have been sitting there if the boat hadn't been moored.