Ok, so I'm not sure if this is a true emergency, but i could def use some of your advice. Several of my 8 chicks are having poo issues. Sometimes foamy yellow, or sometimes liquidy brown poop. It's hard to keep track of who's doing what, but everytime i let them out (inside a few times a day) 1-3 of them have a messy poop. They are on unmedicated food, and are not vaccinated. They havent had any treats yet, except a very small grasshopper that they split between 3 of them a few days ago. I was thinking i would pick up some unfiltered apple cider vinegar for their water and some plain organic yogurt to give them. Do you think that's a good idea? Should I be worried?? I love them all so much, and don't want anything to happen to them.