I would enlarge and harden run, then if free-range to be continued, reduce it to latter part of day making so dog covers area for shorter period of time. Then dog still needs to be able to protect perimeter and maybe even have access to where chickens roost at night. That way you get most of...
I am one of many that employs dogs. They are part of a system that includes fencing (hotwire and otherwise), trapping, occasional shooting, roosters, habitat management, variations in terms of when birds are released when needed, and above all flexibility. Dogs are the most expensive part and do...