I presume you mean, as a treat? Offer them a little and see if they like it. I am often surprised by young birds- sometimes they aren't as excited about treats as we imagine they will be! Just make sure you don't offer them so much of something, that they don't eat their food. Balanced diet very important for growing and laying birds! Good luck!
i have been offering grit for a little over a week now since i have been giving them bread and watermellon. well i'm gonna go to the hardware store tomarrow and buy some and give it to them. they go CRAZY for bread.