Hi, I just got 4 brand new little baby Mallards. Ok, they are Rouens but I like to call them Mallards I would like to know what I can put them in once they are big. I would like to make a small one with pallets. Maybe 2 pallets long by one pallet deep? I will also have a run of some sort. For the winter I will probqbly put insulation between the pallets cracks or holes. Can I have some help and some pics?