Okay, my four Patridge Chantecler girls are 7 weeks old and still sleeping and napping in a pile. I have provided a roost bar, but they simply snuggle up to one another, all entwined with heads on one another's backs....really the most adorable site! Should I be concerened? They live in a Forsham design chicken ark. Sometimes they nap in a row on their outdoor roost bar, but at night.....they always choose the snuggle pile. The temperature is very comfortable at 15-18 degrees C. Will they "grow" into using the roost bar in the top of the ark during the night? Will they continue to sleep in a pile, even when completely grown?