I live in a rural part of the city and have a flock of free range chickens. My neighbor built a coop and purchased 4 almost full grown hens. The first evening after dark his family dog somehow managed to get the door open to the coop and killed one of them. The dog who had been fed a couple hours before ate almost the whole bird. I know it is not out of the ordinary for a dog to kill a chicken but to me they usually just leave it lay there when it is dead. My neighbor wants to eventually let his flock free range for a couple hours after work. I am thinking if his dog gets a chance it will kill again. Any ideas?