I have three pullets. We bought their coop from Costco, but have had to make many alterations to it as problems arise. It's a small coop and the only form of ventilation is the opening that leads to the run. It has a tiny door for access and the door has a little four paned plastic window. I was thinking that I would take out the plastic, and replace it with chicken wire. Another thing I was planning on doing was cutting out a slit, maybe 9" by 1 1/2", and putting chicken wire there. I want to put it on the wall of the nesting box but I'm concerned that my girls might get scared if a predator came sniffing around or something because that's where they sleep. Should I just put it somewhere else on the coop? Thoughts, and suggestions are greatly appreciated. Thanks! Also when I say chicken wire I mean the wire that's little half inch by quarter inch squares, if that makes a difference.