Ours has three south-facing windows, one east facing, one west facing. A large pen is attached to the coop on the north side. Our coop is nestled underneath and between a large walnut tree and two apple trees. These provide great shade in the summer which helps keep the coop as cool as possible. However, the leaves all drop off in the fall/winter, which allows the sun to shine inside which helps warm it slightly. We have found this set-up to work perfectly for us. It maximizes the shade in the summer and the sun in the winter. Hope this helps somewhat. Use hardware cloth generously to help keep critters out!