View attachment 2361868
Red I think is the base of where you should put the chicken wire, hc, or welded wire. one wall of it going up a ways, however high you like, bur high enough for chickies (at least as high as it is now) one panel going all the way across the floor vertically to that big box thing. Attach it using heavy staples. One panel going across horizontally, as the roof. The blue represents zip ties to join them. The pink and green are the larger amounts of space you could do, attached the same way. Add some panic room holes immediately because these have been in the coop for a while. Make sure that they're big enough for the chickies to easily get through, but small enough for the hens to not get through.