Our new ducklings are almost 6 weeks old and need to go outside asap if the weather will cooperate. We want to move them in with our flock of 2 yr old adults at some point this summer. They will be getting temporary quarters very soon (dog kennel and a small house that hubby will make). I plan to place the temporary quarters next to the older birds so they can get used to each other through the fence while the young birds finish growing. My older birds consist of 2 mallard drakes, 4 mallard girls, 2 Cayuga girls, and 2 Swedish girls. I will be adding 5 white crested and 1 rouen all of undertmined sex. When the time comes to merge them all together what tips can you share for making the move?