Since the predator attack when 2 of my three girls were killed during the day, I have only been letting my remaining hen out when I am around in the garden. This is not always a long time as I have a job and 2 kids! otherwise she is in a smallish coop. We are going to build a bigger coop with more of a run for her and the new girls, but meanwhile, how much free ranging is enough to keep her healthy and happy?