That was the common prior recommendation, but that has evolved...and I explained why it works.My understanding was that the birds should be of a comparable size before full integration.
Well you saw mine, I think, but others have posted other options too, you'd have to look for them. Any 'doorway' that opens enough for the chicks to get thru but not the adult birds will work. Lattice can work. Have seen folks use a crate with the door propped open just so far. I used a crate with the door removed and piece of fencing across with one corner bent up. Have seen the barrier wall between chicks and adults raised off floor just enough for chicks to get under.But what kind of interior ideas have been posted or known already?