To brighten your peony parrot's coat, try providing the following foods:

Rich in vitamins Fruits and vegetables with minerals: such as carrots, sweet corn, apples, bananas, mangoes, pomegranates, strawberries, etc. These foods help promote the growth and maintenance of the parrot's feathers.

Grains and legumes rich in protein and carbohydrates: such as oats, wheat, barley, corn, soybeans, mung beans, etc. These foods help promote feather growth and repair.

Nuts and seeds rich in fat and vitamin E: such as almonds, walnuts, pumpkin seeds, sunflower seeds, etc. These foods can improve the brightness and gloss of feathers.

Foods rich in calcium and vitamin D: such as low-fat yogurt, fresh milk, cheese, etc. Calcium and vitamin D are important for the growth of bones and feathers of peony parrots.