In my rural neighborhood all the dogs roam but none of them are chicken killers. We've all agreed to talk with each other if there's ever a problem with a dog, but so far since we all have chickens and all our dogs are trained with chickens, there has been no problem. Guess we're lucky. Just make 100% sure that the dog you're shooting was really the culprit... I've known of some tragic misunderstandings where the wrong dog was shot, and would never want that to happen to my roaming kid.