Does anyone know of a thread/website/book that outlines how to examine a chicken and diagnose based on exam and symptoms? There are 50 million things that can cause illness in a chicken (I had no idea they were so vulnerable!) and it would be very helpful if I could find a logical way to approach a diagnosis - e.g., if this symptom, most likely one of these kinds of illnesses. I have The Chicken Health Handbook but quite frankly, it is overwhelming and doesn't seem to have recommendations on systematically examining and diagnosing. Any recommendations would be very much appreciated, thanks!