WELL, I took down the divider and it did not go smoothly. The adults kept attacking the younger three. I sat in the pen/house for an hour trying to keep the peace. I did keep both water and food bowls and place them on each side of the house. I sat outside the pen/house for another hour (they could see me thru the fencing), and tried to settle them down. When I left the young ducks were huddled together but sitting down. The older were just waiting until I left. I checked them again just before dark and a racket was coming from the house. Once again when they saw me the older ones stopped and went to a neutral corner. I am going to check on them again a little after dark and see if they settled down. I am planning on leaving them together in the house for about a week and hopefully they will start to get along.