We have 6 hens in a 2 room cage, about 18x48”. One (smaller) room sheltered, one more open. I closed off 3 sides of the bigger room for the winter, and put an electric heating element into the water to avoid freezing. We use auto feeders for water and trad feed, and give them black fly larvae as treats. They’ll peck away at celery, lettuce, etc, but they haven’t consumed the greens very thoroughly.