So dh and I found two BEAUTIFUL brand new, big windows at the Habitat Re-Store for the coop. Both are 30something by 50 something Jenweld double pane. I want to put one on each side for great light for the chickies, one north, one south. The south worries me. It will be shaded in summer, but I don't want it turning into a greenhouse. Are curtains OK or should I put real shutters up? Or maybe not worry about it?