I could get a bunch of young hen pheasants for free (Father knows a guy who only wants the roos). I would love to take them and try to get them back into the wild. We have very good pasture, and a few wild Pheasants. I was hoping to just revive the population that has been decimated. I fully understand my losses will be high. I have read I cannot keep them with chickens, does this include in a barn where the chickens were kept? How old do the hens need to be before I begin Turning them loose? What else do I need to know?