I've read several posts about giving Parakeet grit to baby chicks -- so far all I've found is Parakeet Gravel -- that seems to be a mixture of charcoal, oyster shell, and grit -- is that what everyone is talking about? I've also read some posts that say it is bad to give oyster shell to baby chicks as the extra calcium can interfere with the development of the baby chick's bones. So now I have been steering clear of anything with additional calcium. My new chicks are set to arrive on Tuesday and I want to make sure I have everything ready -- it's been a while since I had babies and I want to make sure everything is just right for them. I honestly don't even remember feeding chick grit last time (but I might have it was a while ago) I have a starter mash, some folks seem to say that you don't need grit with mash -- some say after 4 days old chicks should get grit. Any advice? Thanks Posters!