Hello. I am a new chicken owner and have run into a problem. I've only had the chickens since this Sunday and was told that they are around 2 months old. I noticed this afternoon that one hen was sneezing and has increased as the day has worn on. I just went and checked on them and picked her up. She immediately vomited on me. It was brownish in color. Any ideas as to what the problem could be and what I can do for her??? Any advise would be greatly appreciated.