[header] How to spot vitamin a deficiency in an amazon parrot [title] Notice any cold-like symptoms. [step] 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. 
[substeps] 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.