I originally had two horse stalls that I removed the center wall from so the chickens had a really large coop (12 w x24 l x 8 h). After adding 14 ducks and 16 chickens to the 12 chickens I started with last fall, I had to make a change. So I put a half wall down the center to separate the chickens and ducks. The brooders are set up on the ducks side, including the new chicks until they get big enough to go in the with older hens. I read in another post that I could use sand in the duck coop? The shavings and straw are just too messy. I am almost done with the outdoor run as the weather has finally been getting warmer here. We have a 3-rail fence around the outdoor ring attached to the two coops. I nailed 2x3 welded wire fence to it all the way around (to keep the chickens and ducks in during the day) and am in the process of putting flight netting over the top. The outdoor run measures 90x40. I was only going to do half, but figured with the ducks and new chicks now I better do the whole thing. This is strictly for daytime use and everyone will be locked in the coop before dark. We have way too many predators around here to risk them being out at night. I am hoping that with them out during the day and playing in their pool, that it will keep the coop mess down a bit.