do you introduce them to the rest of your flock at 4-6 weeks or are you segregating them ?I put my ducks out at 3 weeks cause i got tired of cleaning the brooder. Between the 3 little ducks and the adult they made enough heat just fine. The other birds i hold onto until 4-6 weeks and put them out. Our weather has been so up and down this month i feel like they should have the lamp as a back up plan.