Nutritional errors...it remains a problem
Please note: this case file contains shocking images, but unfortunately it is the harsh reality...
Feeding mistakes casefile 4,
Respiratory problems in parrots and other birds
The primary causes of respiratory problems in parrots/birds are structural nutritional deficiencies. In 1979, Professor P. Zwart, Professor of Pathology of Exotic Animals, published his findings from tissue research on parrots and birds with nutritional deficiencies.
Severe abnormalities were found in the mucous membranes and skin. This involves hyperkeratosis, in which abnormal cells are formed that give rise to proliferations. Additionally, abnormal feathers are produced and the molting process is disrupted.
Furthermore, it has been demonstrated that the immune system is compromised, making parrots/birds more vulnerable to infections such as aspergillosis.
Forty-seven years ago, Prof. Zwart demonstrated the consequences of feeding seed mixtures to parrots/birds. As of 2026, nutritional errors remain the primary cause of health problems and premature death in parrots/birds. A sad situation that, unfortunately, applies not only to birds but also to humans.
In the photos:
- Photo 1: A lung with typical aspergillosis, resembling a container of applesauce that has been left in the fridge for too long.
- Photos 2 and 3: Hyperkeratosis in the nose of a Grey Parrot before and after the growths were removed.
Copyright © Advisory Practice for Birds | drs. Jan Hooimeijer. No part of this publication may be reproduced or copied without written permission from Jan Hooimeijer. Sharing the article in its original form is of course permitted (and even desirable) on the condition that this is always done with clear source information. The article has been compiled with the utmost care. However, the author cannot accept responsibility for any damage of any kind resulting from defects in the content.
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