I was trying to respond to the OP. I sat there for a minute while typing it out thinking, "I hope Rosemary doesn't think I'm questioning her because she's got a great solution." And that's exactly what happened.I only suggest it because this can be made to work for a flock of maybe 3-4 birds, but I agree it's not ideal for the money and time invested.
Also a securely fenced run would need to be added ideally for this to work - a tractor could possibly work however they'd need sufficient "outside time" in it (basically, all day) to compensate for lack of space otherwise.
