We adopted an 18 month old Rhode Island Red to keep our lonely Laverne company. The new bird is definitely at the top of the pecking order but my Laverne seems happy to have a sister again. We are concerned about Shirley's sleeping habits. She figured out how to go up into the coop but sleeps in the straw on the floor below the roost. Is this okay or should we place her on the roost each night till she catches on?