I want to get things right and only feed my girls the best! Right now (since I have more than a typical "backyard" flock with my 11 girls) I decided to use Purina Medicated Chick Starter. I mix chick grit in with their food daily and they're healthy and thriving with no pasting since day 1. We have decided to switch to organic, non-GMO, corn-free feed for both the grower and layer stages. I found THIS awesome feed locally so I'm pretty excited that it's so readily available, sustainable, and has a small footprint, and that my chickens will only be receiving feed with the highest nutrition content around. So, I guess what I want to know is right when they turn 8 weeks old (or whenever I run out of chick starter that is closest to that time period), I switch to grower from 8-20 weeks (and give them layer grit plus some occasional treats like scratch and worms), then from 20 weeks OR the first egg I switch to layer feed? Does all that sound accurate and if so how does one make the switch? Cold turkey? Start mixing feeds for a couple days/week? I don't know how to go about that with the least impact on the girls. Thanks!