They only had sugar water the first day, they've been on plain water since. They get medicated chick starter and we were letting them eat oatmeal out of our hands once a day, but I can stop that if you think it's not good for them.
I searched for vent prolapse on here and that sounds like what it has (I'm not sure if it's a male or female, it's only 2 weeks old and it's a polish so it's got a big fluff head). Is that possible in a chick? It seems like something that happens in layers.
Well anyway, I'm going to get some preparation h tonight and another heat lamp so I can isolate him for a couple days and see how he does.
Other than the scabby butt he seems fine, he's just as energetic as the others, he's not lethargic or anything. (He does seem to start to fall asleep when I have him wrapped up in hand towel after soaking his bottom in warm water!)