I posted this earlier under another title, but I have another question. I built a VERY sturdy play "fort" for my children about 20 years ago. Four upright 6" x 6" x 16' treated posts set 4' deep in concrete. Footprint of the "fort" is 8' x 8'. Floor of "fort" is 5' off the ground. There was a sand box underneath. I'm thinking of turning it into a chicken coop/run combo. I would enclose the sand box area with hardware cloth and install a door. I would build a ramp from the sand box area to the floor of the "fort" so the chickens could walk up to their coop. There is already a slot in the floor, next to the wall, 8'L x 22"W for the ramp. Is it healthy (for the birds) to house the chickens in a coop above the pen?