I have a week old chick and it looks like it has runny pooh. It seems to eat and drink well. his bottom all the down is stuck to skin. I was it all out last night and it is all caked again. He does seem smaller than his hatch mates. Any suggestions. He is on medicated starter crumbles. i have him in with ababy quail now to see if he will grow any. Any suggestions would be helpful.