I have 11 chickens that are 14 weeks old and have been in a 600 square foot fenced in area since they were 6 weeks old. They go into their coop every night with no problems. These are our first chickens and I was originally planning on free ranging them but after caring for them for the last 14 weeks I am pretty scared to let them loose. With 600 square ft to roam, am I gaining anything by letting them free range? We have 3 acres and great neighbors.