I have 6 chicks that are about 2 weeks old. They are on the chick starter and was wondering about treats and grit. What kind of treats could they get? My 3 yr old gave them a worm over the weekend and they loved it! They did not like yogurt at all. What else can I give them? Also, if I am giving them a treat, say once a day, do they need grit? If I get grit can I get away with parakeet grit? Thanks!!