I have a mixed flock of 5. Two standard breed 5 week old chicks (lavender orp and salmon faverolle) and three 8 week old silkies. I live in Michigan where the weather just made the switch to fall.. 60's during the day and 40's at night. When is the opproproate time to move these guys to the coop? They aren't cute fluff balls anymore and they are stinking up my laundry room. I've been turning their heat lamp off during the day and on at night.