I have a chicken coop and a large fenced in area for my chickens. I'm wondering if it is a good idea to put the new brooder and chicks in the chicken yard or if they need to be in the house? The brooder has lamps and adequate heat. There will be no way for the other chickens to get into the brooder. And I would prefer not to raise another batch of chicks in my finished basement. Also, introducing the last set of chicks did not go so well. 3 of the 5 died within 2 weeks and the 2 remaining are a pullet and rooster that seemed to have formed their own "roost". Any advice?