On the following pages I have described some of the most common diseases. However, the list is not complete, there are many other diseases.
Make sure to watch your birds carefully - if anything changes e.g. loss of appetite, drowsiness, trouble breathing, trouble sitting on the perch, changed color or texture of droppings that may be signs of some medical condition. I strongly recommend you visit the veterinarean as soon as possible when you have the slightest suspicion about health problems as some conditions can quickly develop to a fatal outcome.