I use nutrena feather fixer (a little high on calcium) mixed with all flock or poulin grain 20% gamebird grower. In the morning I add hot water to chick crumble to make a mash. Silkies aren’t a production breed and I always have boys and non layers so I’m careful about feed with high calcium. I always have grit and oyster shells available but I started the alfalfa and feather fixer when I got Seramas because I was afraid they couldn’t eat the oyster shells. Treats are only a few times a week and they are sprouted grains, scrambled eggs with herbs or alfalfa. On nights we are going below zero they get 5 grain scratch before dark but that is very infrequent.