First, how steep of a walk going from the ground to their coop can they go up? When we installed the coop, it's sitting lower to the ground than it did before, and now they only have like a 6" space between the walk and the floor of the coop. What's the biggest angle they can get up? We might have to enlarge the floor access for them. Second, we have hawks in the area. We're going to use 4' field fencing to give them a run, but there are some who like to fly over the fence and get out during the day. Should we get some bird netting to go over their run to keep them in and the hawks out, or will the rooster give the girls fair warning? Guess there's a third question. How big of a run do I need for 12 chickens? Thanks!