I've heard that chickens and ducks can be housed in the same coop. I am thinking of getting a dog pen (reinforced with chicken wire) and using it for a run (about 100 sq. feet) and adding a dog crate as a temporary shelter as I build a permanent coop to attach to the run. The flock would consist of approximately six hens and four ducks. Would this be a workable space? Also, if this system would work, the chicks would be about eight weeks old when the ducks were four weeks old. Could they be integrated successfully? Thanks!