Hi guys!! First off I love this site, it's been a godsend. So, I've been reading a lot about baby chicks needing probiotics to help them form good gut bacteria. I read about making a treat mixing yogurt and starter feed a couple times a week. I've got some milk kefir I was wondering if I could give them mixed with their feed? But it's blueberry flavored. So is kefir OK for them? And is blueberry OK for them? Or should I hold off until they're a little older? Thank you guys so much!!!!