Ok...I don't know if this is an emergency or not...so I'm asking you folks who are smarter than me. I have two ... one week old Barred Rocks. They are ONLY eating medicated chick feed right now. Today (I've had them for 4 days) I noticed that their crops are about the size of a standard marble. (and strangely off to the right side) I have them in Pine Shavings for bedding but they don't seem to be interested in eating it (atleast that I see) I've not given them any kind of grit as of yet...but I'm concerned if this size crop is normal when only eating crumbles? Advice on that and what I should do would be terrific..... Thanks so much!