Our flock is 18 wks old now and still free range 12 hours a day. Lately they dont seem to happy with pre mixed grains and will leave their morning ration of crumbles until the next morning or evening. They appear healthy. But just want to free range the moment I open the coop at 6am..they have access to a few acres. Could they be getting their full just from free ranging ? Or possibly slowing down in growth? They are big. One of the wyandotte roosters deboned gave us 5 lbs of usable meat last weekend. Just curious as the pullets have not started to lay yet. I want to make sure they eat a good diet plus wasting grain is not fun at these prices if they ignore the feed for more than 24 hours. Thanks.