When can poults leave the heat lamp behind? I've been having a little trouble with them flying out of the brooder even with 3' walls so I want to put them in a barn but there isn't electricity for a heat lamp. The lows this week are only 65° at night and they are 4 weeks old today, is that too cold and too young? I usually keep ducks and geese inside until they are feathered but turkeys came pre-feathered.