Weeg
Enabler
Yes, that makes perfect sense. An unhealthy fox will likely die anyway, and can carry diseases. Killing the healthy living ones though, will only allow other predators into the territory, which will then kill your chickens if they are living in a coop that isn't safe, and secure.@Weeg makes a good point too. But regardless of your plan with the healthy one that’s giving you trouble, it’s only humane to try to find a way to dispatch the unhealthy fox, or contact someone that can catch and treat it, mange can be dealt with I believe.