I am very new to chicken keeping (day 5) but I am so excited! I built a coop in my barn with access to the outside (well almost finished). I have a run setup outside. It is 8x16' and 48" high. I did not cover the run, but I see that most are. Should I? Will my dear girls "fly the coop" even if clipped with a 4' fence? Thanks for the great advice.