I have a hen who has been totally free range, no coop. I just moved her and her 10 2 week old chicks into a coop. Want to keep them safer than just a fenced yard. How long should i keep all of them inside the coop so that they go back into it at night when i finally let them free range during the day? She was given to me as a gift and i didnt have a coop but used a dog crate. She and our rooster decided they preferred a tree at night. Will they ever start using the coop?