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How to spot vitamin a deficiency in an amazon parrot
Notice any cold-like symptoms.
An amazon parrot with vitamin a deficiency often appears as if it has a cold. It may seem lethargic, and it will probably have a plethora of respiratory symptoms that mimic the common cold.
This includes things like sneezing, wheezing, crusty nostrils, or runny nose/nasal discharge. It's possible that these symptoms could also be caused by a bacterial infection of the upper respiratory tract.