I bought a box of 10 Welsummer chicks at auction. 5 girls and 5 boys it seems... there was no info on how old they are but I was guessing about 7 weeks... can anyone comment? at the moment they are all in together in a growers run but I have a couple of questions. Firstly, should they still be getting chick crumbs? I have been giving them chick crumbs and some mixed grain but they seem to go for the grain first. Also, at what age should I separate them and decide what Im doing with the boys? thanks!