Non chicken person here, so forgive naive questions . . .
that gizmo, on wheels, is that where they will LIVE, or do you shift them into that thing, move it around and have it inside a small enclosure so the chickens can peck around the base of it , and retire to the inside? Like a chicken tractor?
I live in suburbia. We are allowed only 3 hens, no roosters. neighbors down the way have about 12 hens. no one minds or tells the city. They sometimes roam a bit , but only one house distance away.
I love the sound of hens. I think it would be a wonderful choice for a 'white noise machine". you know, they have things like tinkling water, the ocean surf, crickets in the evening . . . and now happy hens!