Can Chickens live in an enclosed run?

This can work provided you have enough space per bird, most chickens will prefer to have some foraging time so keeping chickens enclosed full time would not suit rangy breeds such as Hybrids, but most can acclimate to a run. You will need to make sure there is not overcrowding and we only recommend this for a large walk in run, where you can enrich it fully and create ledges, perches, swings etc… We would only really recommend this for
more docile or delicate breeds who prefer an aviary style run like Silkies, Polish, Japanese bantams, d’Uccles etc… For larger rangy breeds we recommend no less than 2-2.5mtr sq per bird and for bantams 1-1.5mtr sq per bird as a bare minimum.