We thought on Saturday that the fox had finally succeeded in getting one of the hens. Only three were there at putting in time, and a search only turned up ginger feathers in the graveyard (appropriately). We searched; the dog searched - no hen. So, two nights went past, and we assumed Matilda was now fox food. Yesterday I went up at lunchtime to give them a handful of corn, and all four waddled towards me across the wreck that was once our sand school. Poor Matilda now has only one tail feather left and therefore a sadly naked bottom, but she seems fine otherwise.
We're really puzzled about where she has been. There is a very large bramble patch in the school, so we think she must have holed up under there until she felt better, at which point she emerged.