Hello everyone, I'm about to get my first chicken. Just one...for now. Not sure what type yet. I'd like to build a run that is 3'x4' and a coop that is about 1' x 3'. Does this sound about right for one chicken? How tall do the walls/roof of the enclosure need to be? Also, I'm wondering about letting them run in my yard. If I were to clip the wings, would you say that any yard that is "weiner dog proof" would also be "chicken proof"? I have a fence but I'm not sure how good chickens are at escaping. The fence is only about 5' high in some places.