The diet of the bird should be carefully evaluated for the body's vitamin A percentage and its precursor. Evaluation of vitamin A precursors (such as Beta-carotene) is important, as the bird’s body will covert it into vitamin A.
Food rich in vitamin A and vitamin A precursors include fruits like cantaloupe and papaya, vegetables like chili peppers, leaves of broccoli, turnip and flowers, sweet potato, carrots, beetroot, spinach, dandelion, collards, endive, egg yolks, butter and liver.
A well-balanced diet can also ensure your bird does not acquire a vitamin A deficiency.
A product made of fluid, cell waste, and cells
The apparatus used to make the voice in living things
A localized infection, usually a lesion filled with pus. Can be large or small in size.