I'm in the planning stages of a small coop that must be built on the north side of an existing shed. There's plenty of shade from trees overhead for the summer, but I'm worried that there won't be enough light for four layers during the other seasons. I'll have room for a large-ish run, but the coop must be on the small side (2.5'x6') with a roof and the west wall on hinges to access eggs and clean. I can put small windows and vents on the east/west sides, but I'm considering clear corrugated vinyl (or perhaps greenhouse roofing vinyl) for the roof to allow for light. I'm in CT near the shore; we get cold and snowy weather, but it's rarely extreme. The prevailing winds will be largely blocked by the shed itself. Questions: When books/experts say layers need "light," do they mean direct sunlight? Or, would dappled shade in the run and a dark-ish coop be fine?