We brood in an outbuilding, never in the house.
So, as time moves along, we keep decreasing the supplemental heat out put. I usually progress through a series of ever lower wattage bulbs until that time come when the only get heat at night and finally, they are on their own.
This being late Spring in North America, the pace at which one can acclimate them is getting pretty easy. 50F night time lows are not cold for a 5 or 6 week old chick. -10F would be cold for them at 5-6 weeks.
So, as time moves along, we keep decreasing the supplemental heat out put. I usually progress through a series of ever lower wattage bulbs until that time come when the only get heat at night and finally, they are on their own.
This being late Spring in North America, the pace at which one can acclimate them is getting pretty easy. 50F night time lows are not cold for a 5 or 6 week old chick. -10F would be cold for them at 5-6 weeks.