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Pneumonia often can occur as part of a generalized respiratory problem in chickens. The type and severity of the infection depends on the cause, the length of time of the infection, and the immune status of the bird. Pneumonia can be caused by bacteria, parasites, or fungal agents Aspiration of food or fluid can be a contributing factor in it's onset.
Clinical Signs of Pneumonia
Affected chickens may show signs of coughing, weight loss, difficulty breathing, crackles, and general depression.
How Pneumonia is Diagnosed
Pneumonia is diagnosed in chickens through a complete blood count, radiographs, and culture or cytology samples from tracheal washes or directly from the lungs using endoscopy.