We have three one-year-old hens with their routine down, but their new "little sisters" do not. They do all go in the coop before the auto door closes now, which is great! However, the pullets are sleeping in the nesting boxes. Tonight I pulled them out and set them on the roosting bar, but they immediately jumped off. Do I need a second roosting bar or will this just come with age? I'm afraid they're going to break/eat/damage any eggs in the box. The "little sisters" are about 14 weeks, and our roosting bar is about 6' 6" long. TIA for any advice!