It's funny, no one has a problem with killing a mouse when they steal food or opposum or raccoon when it threatens an enclosure but when you get to an animal more rarely seen it somehow invokes more empathy. I quite frankly think foxes and bobcats are a couple of the most interesting and beautiful animals in the woods but if they threaten the yard, they gotta go. That fox ain't gonna remember your yard as the place it got its tail kicked and stay away. Keep it as a pet or do your flock and maybe someone else's a favor. Whatever you do don't relocate. Even if you got far enough away from other folks, you don't know what illnesses you might transport into another innocent population of animals.