I bought 7 chicks on Friday. The breeds consist of 2 buff orpingtons, 2 barred rocks, 1 java, 1 rhoad island red, and 1 speckled Sussex. The Sussex is having trouble breathing. From what i have heard you should take the chick off medicated feed, make it drink sugar water, and separate it from the others. She seems to move fine when i make him, her poop is perfectly normal she is just really lethargic and fatigued. She breaths really hard when she lays down and when she is standing up. She is substantially smaller than the others, i don't know it that's just her breed or if its part of the illness. Please give me some help as soon as possible!!