Hi, I had a chick die about 3 weeks ago. I am learning now that it had cocci from the red bloody stool. I am hearing that you need to treat the whole flock. I have 3 adult chickens and one of the chickens is momma to 10 babies. The babies are 1 week old and I am not sure how to give the babies the sulfa and not the momma. As they drink the same water. The babies are brand new I just got them 4 days ago along with the momma. Do I need to treat them? They are in a coop that my adult hens were in not the other coop where the other chickens are that got sick but the adult chickens have been in the coop where the sick chicken was. Is it that contagious where I need to treat the new babies too? Or is medicated starter enough for the new babies? Thanks in advance for the help!