Love this idea! we are building soon and this is what I need also. I have temporary pens made from pallets with wire attached. I have a pen for silkies, one for three call ducks, a pen for four male call ducks, a pen for a male Khaki Campbell and a male Blue Swedish and a pen for my Splash Banty Rooster and hen. I let each group out seperately also. I can let ducks and chickens out together and they do go back to their own pen. Good Luck and thnks for sharing.