My red broiler cockerel looks great (love how I got just one roo out of 8 birds in a st run) but some of the hens look pretty small. They are 11.5 weeks old. Their harvest date is this Saturday. If I hold off on harvesting some of the hens, how long can they go? Has anyone kept a red broiler till 18-20 weeks? Next week I am starting some CX and I could probably keep the red broilers until the CX are ready... Anyone had issues on a long lived red broiler? My 8 broilers are in a 40sqft run and occasionally free range my suburban yard. They have had 20-28% feed depending on what the store had in stock. Thanks!