"He's emptied the pond down to the liner, and NOW you show up?"
These two images are of the same bird, I believe, as on checking back through my photos, I did not have images of the other one. What a numpty.
Whether their appearance was related to the emptying of the pond, or more precisely, the heaps of mud about the garden, I don't know. Certainly, all the borders had a generous helping of pond goo, so the place stank to high heaven and our resident Dunnocks haven't been seen since!