I don't understand this constant debate. Its such a common question and there seem to be two camps. One, cram as many birds into as little space as possible. The other, give them as much space as possible to keep them happy.
I know they are just birds, I'm realistic. But then again I'm not heartless. To me it is more of an ethical question. Is it really that hard to nail some boards together and staple some wire to them? Just my opinion, but if it is...maybe keeping animals isn't for you.
I am watching my neighbors chickens while they are away. Six birds crammed into one of those feed store pre fab coups. I honestly feel sorry for those birds.
Give them some space and let them lead their little chicken lives.