Ok I think we are all ruining this poor thread. Enough is enough your opinion is yours you don't have to share it. Some do train their dogs this way thats their opinion and you don't have to share yours. :)
Ok if your dog kills a chicken tie the dead chicken around your dogs neck with rope (not tightly just to stay on) leave for 1 or 2 weeks and your dog will NEVER want to kill a chicken again. I sounds mean but, its better then putting your whole flock at risk.
What im trying to say is if your dog kills a chicken I can help you it will be the last chicken your dog kills. It worked with my dog. Im not saying how unless you need the help.
Yes I know how to train not to kill chickens but, you need a dead chicken that your dog killed. Or else your poor dog will not know what in the world is happening.