Hi -this is my first post. Also first time with babies.I have a 9 week old barred rock hen. She has caramel colored runny droppings. I swear it was not like this yesterday but one of the other chicks had runny poop yesterday. Should I automatically assume that they have cocci? Do they need antibiotics? They are all happy and healthy in appearance-eat and drink well and very active except for the intermittent runny poops. Is this normal? All they eat is Nutrena chick starter. The guy I bought it off said it was medicated but there is no indication on the bag that it is. Thanks!