We're lucky to live on acreage and have no restrictions, plus our soil drains well. The pasture grass has mixed vetch, oats and barley sown in, and I plant rows of sunflowers in the spring; all this draws grasshoppers and other insects, so the chickens can forage to their hearts content on both...
We have over 50 hens and four roosters (my wife has a chick addiction) divided into a main flock, my small flock of Ayam Cemanis, a bachelor pen of surplus roosters destined for dinners, a chicken tractor of young pullets growing out, a brooder of f-1 olive eggers (Ameracauna x Cuckoo Marans)...