Since the morning was inviting I decided to walk back home; a virtuous enough act to promise myself some afternoon chocolate.
Part of the way, I walked along the canal bank with loud duck activity accompanying me. Almost at the point where I was leaving the bank for the road again I stopped in my tracks appalled by what I saw.
Feathers. Not just one or two but hundreds of white feathers almost covering the bank in a snow like carpet.
As I stood there trying to work out what had happened, a man rode past on his bike and said, 'Mattress explosion.' and carried on.
And to add to the mystery, the swans had disappeared.