Hello BYC! I got four chicks almost two weeks ago. The girls are still inside under their lamp but I can see their move to the back yard on the not-so-distant horizon. We built their coop so that we will open the door in the morning for them and close it at night, but I am wondering if enclosing the run over the top with wire is necessary. The perimeter is minimum 6 feet high. The girls should be too heavy to fly so I'm not worried about them getting out, so much as keeping unwanted guests away. Thanks!!