This afternoon all chicks seemed fine, but I just checked on them and one of my barred rocks would not get up or open his/her eyes. I picked it up and noticed its butt was pasty. I cleaned it off with warm water and very gently squeezed it's butt and some poop did come out, and it did peep and open it's eyes, but it still is still very lethargic and I don't know what else to do. Please help!!