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. I currently have five pullet chicks all are layers or duel use and will add a roo soon. Any offspring will be for meat and will add atleast five to the layers to join the original hens and roo. The meat birds will be kept in the smaller rearing coop until they are processed to prevent over crowding the layers. So after all the rambling (sorry) Is alternating 5 to 11 birds in these runs ok or should I just build one big run and just clean it and plant portions of it on occasion.