Shoot it - Feral cats do more damage to wildlife than most native predators. If you have ever seen - what they will do to a nest of baby rabbits or quail or pheasants, never mind the songbirds they kill - as I have - then there would never be a question of what to do. They will maim or cripple every one they can catch and then - maybe - only kill and eat a part of one of them. They are not a legitimate part of our environment.