Hello and welcome to BYC! So happy you joined our community. I feed the starter grower until they are feathered out and that usually is around the time the original bag runs out. After that I feed "All Flock." I stopped using layer feed because it's really meant for birds that are actively laying. Too much calcium is not the best for non-laying birds. I also keep a cup of oyster shell available for those that need it. Best of luck with your wee flock.