[COLOR=800080]When they are young they typically don't need grit if they are being feed chick starter. If you do want to feed them grit you can give them grit from a pet store. They sell it for parrots or another kind of pet bird. If they are kept outside sometimes the can pick up enough from the ground depending on your soil.[/COLOR]
I sprinkle mealworms on a pile of sand and the chicks eat some with the worms.