A strange fish

What has this Heron caught?

Never leave your camera at home. You never know what you might see. On this occasion I was not going to bother to take the camera with me, but had second thoughts.
This is a heron near to Shaftesbury Rd lakes. Normally they catch fish, but a dinner's a dinner for all that (as Robbie Burns might have said). The forlorn looking animal is a water vole caught swimming in the stream which runs out of the lake. Again a qhick photo was necessary. This was the third one fired off, as the Heron didn't have a good hold on the catch, dropped it on the floor and picked it up like this!