I have two hens and am thinking about adding another one or two....I am getting a rough collie puppy this fall. His breeder owned chickens and goats and he has a sweet temperment. Is it possible to train a rough collie pup to a) not kill chickens b) and round them up at night and herd them into their coop? Anyone have experience using their dogs, collie or otherwise, in this way? I have 1/3 acre and one reluctant hen who'd rather stay out all night and risk coyotes, possums and coons then come into the coop at sunset like the rest.