Interesting idea I never seen this.I let my chickens have the run of the garden area all fall, winter & spring until I start planting. I currently have an orange plastic fence around the garden to keep the chickens out. I think you need to look at chicken tunnels: View attachment 251363
She used to let her chickens run the property but between the Hawks and the coyotes they got picked off fairly quickly.
This chicken tractor should keep them safe from predators while allowing them a place to roam and roost.