I have two shelties and one cocker spaniel cross mutt. I would never trust any of them with the chickens. One of my pullets got into their fenced area and they killed her. I don't blame the dogs for it but I wouldn't let them run free. It might be a different story if they had grown up with them but I have had them for going on ten years and only got the chickens this year. One of my shelties is very territorial. He barks at the horses because they are in "his" yard. When we lived in Florida and had Navy pilots in training flying over our house a lot, he would spend all day chasing the planes because they were in his airspace!
He has always been my psycho dog but I will miss him the most when he is gone.
