I have a rooster and 2 chickens with 2 Cockrells and 4 pullets. They all sleep in the coop and they roost . Recently I bought 2 hens from a chicken store and at night they don't roost. I have an available stick for them to roost on so it is not a problem of them being scared. How should I get them to roost so they won't sleep on their poop?