Hi everyone, I just have some feeding questions, (im new to chickens) My chicks are 10 weeks and 20 weeks. Right now they are all eating grower. What is the youngest age i would be able to switch to layer for the 10 weeks? The latest for the 20 weeks? (the 20 weeks are SL's and arent laying yet-any day now!) Dochickens need to have oyster shell? What does it do? I thought it provides calcium for the layers? How do you give it to them? They are having whole corn mixed in with the grower, but dont have any grit right now. Will they be fine for a few days without it, just finding pebbles in the (now dirt) run? Or is this a problem? When i get them the grit, can i just use budgie grit, until i can make it up to the feed store? How do you you feed them the grit? Thanks!