How do parrots get cancer

Does your parrot suffer from obesity?

Your parrot's body weight can be an indicator of serious medical conditions.

If you are overweight, just like us humans, the risk of diabetes and cardiovascular diseases increases very sharply.

Underweight can be caused by serious infectious diseases or cancer.

You can recognize many diseases at an early stage when the chances of recovery are still good.

For this it is important that you regularly put your parrot on the bird weigher!

Pathological weight loss in parrots

You can recognize an underweight parrot by the fact that it has little fat and muscle mass left and right of the sternum.

The following disorders, among others, may be present with weight loss:

Diseases of the beak

Deformity of the beak or inflammation can cause your parrot to be in a lot of pain while eating.


Parrots can also get cancer. Most cancers are associated with weight loss.

Infectious diseases

One of the most common causes of weight loss in parrots is infection. Viruses, bacteria, fungi and parasites can literally suck your parrot's energy out and make him limp and tired. With some infectious diseases, the parrots affected suddenly behave aggressively, even if they have always been nice to them. You can find out more about it here.

Parrot fever (psittacosis)

This disease is common in parrots and can be passed on to humans. Symptoms of psittacosis include weight loss, diarrhea and breathing problems.


Aspergillosis is a mold infection. Often the sinuses and lungs are affected, but the aspergillus can affect other organs and even your parrot's central nervous system.


This disease is caused by bacteria. Most of the time, if your parrot has tuberculosis, it will eat with a good appetite and will still lose weight.

Candida infection

These fungi can attack various organ systems. If the airways are affected, your parrot will get a runny nose. You should also keep this disease in mind if his voice changes, he breathes faster than usual or if he has difficulty breathing when playing games. If the digestive tract is affected, your parrot will lose appetite, have diarrhea, and sometimes vomit.


This condition can be fatal, especially in young parrots. Often the affected birds bleed easily from different parts of the body. Bruising can often be seen over the goiter and on the skull. In addition, infected parrots have no appetite and are sometimes depressed. Young parrots can develop permanent damage and feather growth abnormalities. It is important to know that adult parrots can have this infection without looking really sick. In this way, an adult parrot can infect young birds that are new to the aviary!


Parrots can also get liver inflammation. Often the manure then looks greenish.
Heart disease

Sometimes your parrot's heart chambers expand. Then the heart stops pumping enough blood and needs more energy to beat. An indication of this disease, in addition to weight loss, is when you see undigested grains in the feces. The intestines don't work as well if they don't get enough blood from the heart.


This nasty parasite can be responsible for your parrot's plucking. In addition to feather plucking, diarrhea, loss of appetite and depression are also important symptoms. This disease can also be fatal if not treated in time.


Roundworms or tube worms can rob your parrot of nutrients and make him limp and tired.
Mange (scabies)

Mange is a mite disease. If your parrot has this condition, it will be confused, lose feathers, and develop red, thickened skin.
This disease can also be transmitted to humans and is very contagious.

Nutritional problems

Some parrots are so thin and skinny because they are fed the wrong food. Here you can find out what to feed your parrot.

Metabolic diseases

Conditions such as pancreatitis (inflammation of the pancreas) can lead to permanent weight loss.

Thyroid disorders

If your parrot has too much thyroid hormones in its blood, it will be cranky and nervous.

Constipation of the intestine (ileus)

If your parrot is constipated, it can no longer digest its food properly, and sometimes it vomits. A common cause of constipation is swallowed toy parts.


The most common is heavy metal poisoning. This disease can arise when your parrot chews on painted objects. Then he starts to pluck his feathers, becomes lethargic, has trouble eating and looks totally uncoordinated. None of these symptoms need to occur. It is also possible that your parrot is simply more thirsty than usual or has developed greenish-bloody diarrhea.


The most common cause of obesity in parrots, like us humans, is that your parrot lolls around on the couch too often. A lack of exercise can also lead to “lifestyle diseases” in parrots.

The wrong diet can also make parrots obese over time. Less common causes of obesity in parrots are liver diseases and metabolic disorders.

You shouldn't underestimate this problem, because fat parrots die earlier and can get serious complications like cancer.

If you want to know more ...

  • Much weight problems are caused by an inadequate diet. In this article, you will learn what a healthy parrot diet looks like.
  • Obesity can drastically reduce the life expectancy of your feathered friend. You can easily avert this fate with flight training!
  • Often times, weight loss is caused by dangerous infectious diseases. Sometimes the sick parrots suddenly behave aggressively. Learn more about it here.
  • More tips for a healthy parrot life can be found in our parrot course.