Fox sightings

I am seeing a fox regularly for the first time since we moved here in 2004. Early on there was a large dog fox that came crashing through a hedge by the back door at night but nothing since. Last week one came into the garden in daylight - running on three legs with blood on its other leg. It made a hasty exit when I went out and clearly knew its way around. Since then I have seen it regularly in daylight typically heading up the field from the wooded area as I am walking through the trees. I don't know whether it has its den on the property but I am concerned about the moorhens. I found a pile of moorhen feathers yesterday and my assumption would be that the fox had taken it.