Hi, I have a little purchased coop for 4 hens attached to a large outdoor chicken run. There are two roosts they used to use at night, but lately they have been taking to spending the night in the next boxes. I don't know if it's because I have a thermostatically controlled red light shining on their water line to keep it from freezing or if it's just warmer to huddle into a hole, but it's giving me poopy eggs because I can't keep it clean enough! Also, they've started to lay eggs down in the deep litter which often gets covered up! How do I get them to straighten up? Remedial chicken school?