I have a pair of Pecken ducks. I hatched two ducklings in Nov.2015. From the first day I put the babies out my drake has gone after them. Ive kept the drake pinned up while the babies are out. Now there the same size. I'm wondering if I can turn them all out together now? I know my drake is going to try and mate the younger ducks. Is it a bad idea to let them out now? What size, age do they have to be to handle him?