Hello, I got new (new to me) 26 week old ducks two weeks ago, and they have been in a 8x16 pen during that time. I would like to let them free range with my chickens, but don't know how long I should keep them in the pen for them to know it as "Home". They came from a large farm and free ranged there, and are shy with humans. Can anyone offer some guidelines on how long I should wait? Thank you!