I recently incubated a bunch of eggs - barred rocks, reds, astrolopes, coocoo marans.... mostly mixed breeds. I'm planning to keep the hens and freeze the roos. They are 9 wks old now. I know that "standard" age is 12 wks but I'm wondering if that's for cornish X's or Freedom Rangers or any old chicken? I'm assuming these will grow slower so will I want to wait longer? I have my first batch of Freedom Rangers coming tomorrow and I'm planning 12 wks for those.