I know this question has been asked a million times on here and I have researched it a million times but there are sooooo many answers to go through. I hope I can get something a little more personalized for my young flock. We have about 67 chicks that are 6 weeks old now. They stay in a converted horse stall all the time but can see out because one wall is hardwire cloth to the outdoors and another wall is chicken wire to the older Cochins that free range during the day but are closed up at night. We have 4 chicks the same age as the others running with the 7 adult Cochins since they hatched or raised them. I do not plan to enclose any chicken yards as our property is totally fenced in. The Cochins stay close to the barn most of the time or come up to the house which is 250 ft away. We have let the grass grow up around the edge of our farm for wild bird forage and the deer. In front of the barn about an acre is very cleared away with short grass. DH wants me to let the 6 week old chicks out to free range a few hours each evening but at this age I am afraid they would not come back even with the light I turn on in the coop for them. A Silkie got lose the other night from DD and I thought I never would get that bugger. What would be the best age to let 67 chicks out and hope I can get them back up?