I will soon be building an 8x8 coop for when the chicks get grown, I built a smaller one for them to mature in. I plan to build the runs 8x20 and put one run on each side of the coop to alternate the use. I can not free range due to my dog's penchant for birds of all types, and the family of hawks that nest across the pond. I am hoping by alternating run use I can keep the grass growing and bugs around for them. They will be near oak trees and have plenty of acorn in the fall and winter.