As long as it can, it will keep coming back for more from yours and your neighbors flocks. You may have to eliminate it. Don't worry there will be more moving in to replace it. Since I eliminated the couple of fox that were killing my birds I have seen others around but they haven't messed with my birds yet. If they do I will catch them and eliminate them too. We have no shortages of fox around here. We did have a lot of coyotes but a neighbor gave some coyote hunters permission to hunt on his land and I did hear gunshots over in his direction so I think they may have gotten a few because I haven't been seeing nearly as many as I have in the past. With my cameras up I could actually notice the same ones by certain markings or injuries. They make the rounds. I believe they have routes they routinely follow.