As we mentioned earlier, you should avoid foods high in salt, sugar, or that contain excess preservatives and chemicals. Also, you have to look out for these foods that are fatal to your pet bird: Alcohol, Avocado, Tapioca, Dairy products, meat, chocolate, or cocoa are some of the foods that can be toxic to your pet parrot. High-fat foods, caffeine, fruit pits, apple seeds, onion, garlic, etc. should be avoided to ensure your parrot is in good health. Xylitol is an artificial sweetener found in diet foods and sugarless gums; this can cause liver damage and should therefore be avoided.