You and your veterinarian must work together. When birds make their nests, they prepare the brood patch by removing the feathers from their chest, abdomen, and legs. This featherless area will keep the eggs warm. This behavior is seasonal and depends on increased hormone levels. Improving the diet improves the skin and feathering in three to six months.
Cockatiels are very playful, social, and intelligent creatures.
Emotional and psychological picking may require the services of a qualified avian behaviorist. Ask your avian veterinarian for recommendations. To alleviate cockatiel boredom, spend more quality time with your cockatiel. Also, leave a radio, TV, or tape on when you are not at home. Move the cage to different areas of the house during the day, and include your cockatiel in family activities.