One of my chicks was looking a bit off this morning (head down, eyes closed). When I picked it up a stream of clear liquid came from it's mouth. I can't find many posts with this as a major symptom, those I can find are pretty vague and mention possible sinus infection or crop problem? The chicks vent, eyes and nostrils are clear. It's crop felt empty. It's been isolated it in it's own brooder with mashed boiled egg and apple cider vinegar and honey water for the last hour. I've seen it drink but not eat. Is there anything else I should be doing for it? One of my kids was quite sick last week and I've got some left over penicillin in the fridge if that helps at all?