We have recently had 3 chickens die with injuries to their necks. We had two who had small injuries who have recovered. We do have a rooster and we're wondering if the rooster is doing the killing. A neighbor who thinks it may be a weasel. Would anyone have any advice. We have since taken the rooster out, but it's winter and don't want to be cruel to him. If it is the rooster he will be taken care of, but we want to be sure it's him. Any advice?