Hi, As a few of you know, a while ago we got some leghorns and ended up with only one in the end. Since she was being bullied by the older hens, we put her with some 6 wk old chicks, and they're getting along great. However, I was wondering about what kind of food I should use for them. The White Leghorn is getting a bigger, redder comb, and is sixteen weeks old. I'm thinking it will probably only another few weeks before she lays...but she's still on chick starter, because thats what the six wk olds eat. I'm wondering if it would be ok to switch to Layer CRUMBLES. Also, is it ok for the little ones to have oyster shell and grit? Thanks!