Can my chicks catch strepp from my grandkids? My 8 week old chicks have been fluffed up and stumbling around in their brooder. I have lost two of them. Three of them appear to have perked up some, they are eating again and not as fluffed up. In order to treat them, I started by adding apple cider vinegar to their water. Their butts had some poop on them but vent was not blocked. I also added corid to water. I have one that is fluffed up with head tucked down under breast.