I picked up 5 baby buff orpington chicks from a local farm supply store last Thursday. The chicks were shipped last Wednesday, leading me to believe they were possibly hatched Monday or Tuesday. I have one baby chick that I'm assuming is a week old who seemed more puny from the moment we brought her home. She would drink a bit more than others, is smaller, and seemed okay until today. She is so lethargic and always sleeping - the other chicks knocked her over and it didn't seem to matter to her. I have her separated and in my lap with a towel now to keep her warm, and I noticed she has a slight clicking when breathing. After researching online, I saw where it is most likely a respiratory infection, possibly aspergillosis? She has no runny nostrils or eyes... just closes her eyes all the time to sleep and her breathing is quick. Will this infect my other chicks? I read somewhere that it's not contagious, but I wanted to get advice from someone here. They are on starter feed and just plain water. Should I add sugar just for her? I don't want her to pass away and I work all day tomorrow. Any advice would be welcomed. Thank you!