So my not so small anymore chicks are about to finish up their first 50lb. bag of starter. They are nine weeks old and I was wondering what's next. Should I keep them on starter or begin switching them over to something else. Although I'm sure it's on here somewhere, could someone please give me a what should I be feeding and when. I know there's probably no real science to it .. and maybe there is ... but these are my first chickens so any advice or opinions are appreciated. Thanks.