Cockatiels have specific dietary requirements to ensure they stay healthy and happy. Their diet should consist of a variety of foods, including high-quality pellets, fresh fruits and vegetables, and small amounts of seeds as treats. It is essential to provide them with a balanced diet that is rich in vitamins and minerals. Fresh water should always be available, and it's important to avoid feeding them foods that are high in fat, sugar, or salt. Consulting with a veterinarian or avian specialist can help create a diet plan tailored to your cockatiel's specific needs.