Let's start with some background. I have a mixed flock totaling 14 (BR's, Buff O's, and Black A's) in south east PA. They are twenty months old. My set-up is a mobile coup which has roosts and nest boxes inside and an electronet surrounding to which they run free in every day. Every three days the whole thing gets moved to a new spot of pasture. Their water is clean and fresh. They have free choice ground(not pellet) feed. Currently I believe three are broody....ugh. I am getting four to eight eggs a day. for the last few months! We just went through a spell of three week straight 85+ degree day time temps. Last week was cooler. We moved to a new house and brought them with us three months ago(I don't suspect stress from this). I don't suspect parasites, but I will check vents tonight. If I were to do one thing over with building it, it wouldn't have 1/2" hardware cloth for the bottom, as this doesn't let the manure properly drop though. I do clean it out when it gets bad. Thoughts? Ps, the picture is before the move, when we had more.... some were lost to predation to which I added some string on top of the net, zig zagged back and fourth. Also the brown tarp is no longer on it. Their only shade is under the coup.