Hello everyone! We are brand new chicken owners. Our chicks are three days old. We have a mixed "brown egg layer" pack, so actually have no idea what type of chickens they are. There are two buff colored chicks, three black chicks, two black with yellow coloring and three yellow chicks. The three yellow chicks have to have poo cleaned from their vents multiple times a day, but the other chicks have had no problems. Does anyone have suggestions for how to clear this up in a way that will be ok for the other chicks as well (for example, if we use apple cider vinegar, is it ok for the other chicks to also have it that don't "need" it). Our whole family is head over heels for these little girls and we are quite anxious about any problems.