One thing that I did when my chickens were too big for the brooder but the coop wasn't finished was to keep them in small boxes at night and put them out in the unfinished coop during the day. (The walls and doors were up but the roof wasn't on, so I just draped tarps over the top so hawks wouldn't get them.)
It was a pain in the butt ferrying them back and forth but it made me feel better about them having enough space... and prevented them from pecking each other (which I had problems with before when chicks didn't have enough room. darn aggressive RIRs).
So you could try that, OR you could get a refrigerator box and just put them in that in the basement...
It was a pain in the butt ferrying them back and forth but it made me feel better about them having enough space... and prevented them from pecking each other (which I had problems with before when chicks didn't have enough room. darn aggressive RIRs).
So you could try that, OR you could get a refrigerator box and just put them in that in the basement...