So I bought 6 chicks on Saturday. 3 Rhode Island Reds and 3 White brahma. They are about 2 and a half weeks old. They have all been fine until today. One of the Rhode Island Reds was just laying on the floor very lathargic. We checked its bottom and it was crusted over, so we used a warm wash cloth and warm water to clean its bottom and a large amount of poop came out. It is breathing but still just lying on the floor not moving. I have left one other chick with it for company but removed the other 4. Is there anything else I should do?