We have a flock of 8 layers and just put 6 week old ones in a sectioned off area of the coop. They have their own food and water...we put fence around the sides of the sectioned off space, but didn't have enough for the top and I used a bed sheet?!--will that work enough to keep the old flock out?! How long will it take with them in this sectioned area before I should let them out to co-mingle? The hens usually go out into a run until noon and they I let them out to free range the yard. Thanks!!!!