I just came inside from putting our 7 four week old buffs into their new coop for the daylight hours while we finish the outside walls, and I gotta say... I INSTANTLY thought.. OMG this is NOT going to be enough room.
Mind you, I have nearly 100sf available for these little guys, and they are only a quarter of their full grown size. Not to mention, that I intended to house 20 full grown hens in this here hen house within the next 2 months, that is clearly barely big enough for 7!!
I had planned for 5 sf of floor space per bird inside, and frankly that's not enough for them IMO to have room to move around, run, spread their wings, and generally enjoy themselves fully, flapping & frolicking.
Good luck!

I had planned for 5 sf of floor space per bird inside, and frankly that's not enough for them IMO to have room to move around, run, spread their wings, and generally enjoy themselves fully, flapping & frolicking.
Good luck!