I am in the process of designing my coop. I was thinking about instead of a droppings board under the roost, I would stop the solid floor there , and for the two foot space under the roost, I would have a heavy predator proof wire, which would allow the droppings to fall through, to be cleaned from the outside the coop. I thought this would help quite a bit with the ventilation/moisture issues in the winter and would be easier to clean with a flat shovel. What do you chicken experts out there think? Oops, forgot to say I am in central Missouri. Winter lows rarely below zero. I have Americauna chickens and plan to get some Lakenvelders.