Hi all I have acquired 3 black Silkies (4 months old) and 4 buff Orpingtons (9 weeks old). The problem I have is with feeding them all together. After hours Googling I decided to have them all on Grower Feed and was advised to provide the older ones with grit/oyster shell for more calcium. Am I correct in thinking that I don't need to provide the oyster shell/grit to the silkies until they are at point of lay? (According to the breeder still 4 months away - that seems an awfully long time!) However I then run into a problem as some different sites have said NOT to give young chickens (my Orpingtons) oyster shell/grit.. If I have them all on Grower Feed then I have to give the older ones grit.. but the younger ones can't have grit? I went a little crazy on a website and have bought lots of chicken things as I'm very excited I have some oyster shell grit and Diatomaceous Earth on the way Thanks in advance to anyone that answers me!