Just getting into raising chickens and have a few questions. 1. How important is it to have the fencing for the run dug into the ground if the chickens will always be in the coop at night? Other than hawks do we have to worry about other predators digging under the fencing during the day? 2. We'll have 12 -14 chickens. Planning on making the run about 10x12 or 12x12. Are that many chickens going to turn that area into in mud/dirt pile in no time? Should I come up with some way to make the run movable? Of course, that means not burying the fending in the ground. Any suggestions would be greatly appreciated.