I have built a large coop that sits about 4' off the ground, and my original plan was to build a run that connected to the coop and was completely closed in. After looking at some other coops I see that people often times just fence in the area around their coop which leaves it open from above. I would like to do the fenced in approached as it would give the hens more room, but worried about how safe it really is for them. What are your thoughts or advice? Thank you!