I don't know why anyone would want to keep game birds in a small pen. If they are worth having they are worth providing the proper care and housing. You cannot raise pheasants in the same manner that you raise chickens. Any type pheasant be it Ringneck or Red Golden are basically wild birds and need as much living area as you can provide. Its best to waite until you have a suitable area to keep your birds in before obtaining them. Pheasants confined in a small space will either injure themselves or kill one another. They are beautiful birds and fun to raise and enjoy but never in a tractor or small cage.