Unfortunately I'm not much help for respiratory issues since they range so much. It could be anything from him accidentally aspirating food/water to a full-on respiratory infection like pneumonia.Hi,
I am currently trying to save one of my 10 week old Ameraucauna chicks. He began wheezing. So far I have isolated him fed him, fresh water and bedding. I put oil of oregano in his water plus poultry vitamins. Heg is still eating and drinking.
I would take him off bedding and put him on paper towels. Bedding, especially something like bark, can cause further irritation because of dust particles and make his condition worse.
You said he's wheezing, but does he have any other symptoms? Sneezing, coughing, runny eyes/nose?