I am new to this site and raising chickens. I bought 6 baby chicks from tractor supply last friday they are doing well so far. They said they where assorted reds but i dont know anymore about them than that. what kind of red could they be? i have built them a brooder box that is about 4 by 2 and they seem happy in it. Thier wings are feathering out fast. How long do i have before i need to have a coop built. all the pics i have seen of them have been pretty fancy i am looking for stricly functional for now i live in the city but have a big back yard any ideas?