Deb how many birds can go in each one?There were some young quail, ducklings, older birds, rabbits, a cavy and a chinchilla. That was pretty much it, oh, a few supplies and used cages. I talked about your birds though, someone was looking for a dark egg layer, I told them about Marans, welsummer and all your birds. These pens are each 4 x 12 with a 4 x 4 coop.