there about 9 weeks i did harvest some at 6 weeks and they were around 4lbs give or take a few oz. I don't sell to many birds mostly to friends and fam so I been harvesting just a couple birds a week I have just 2 adults left and they are looking pretty ridicules as far as size goes.I have a pile more that are about 5 weeks and over 2lb and my red rangers of the same age are only about a half lb or so but still bigger than my production red,dark Cornish,white rock,and RIR chicks,the only thing(beside the CX)that are close to the red ranger is my 2 "home made" black sex link cockerels,so I may have to hang on to one of those for a future breeding project.