Thanks everybody. Short term, they are back in the secure run. Also added a camera to watch for predator activity. Middle term, I will double the size of the secure run. That will make it about 200 square feet for the remaining 7. Long term we do have an idea to fence the whole yard. That would allow to redo the perimeter to allow better daily inspection. Lastly, I think my biggest mistake was to allow relatively small (8 weeks) to spend most of the day exposed.