If her parrot food is mostly seeds and nuts she may be getting too much fat and not enough protein and vitamins. Seeds are not ideal, and nuts should be a treat. We would need a better idea of whats in her food to properly advise. If your bird has never seen a vet the best thing you could do is try to find an avian vet and get a blood panel done. My bird was low in a number of vitamins and minerals from an all seed diet and the vet was able to tell me which food to add/remove to better his nutrition. Veggies are a good addition, my bird eat 40% veggies (peppers, carrot (cooked and uncooked), sweet potato (cooked and uncooked), sugar snap peas, squash, pumpkin, broccoli, Kale... etc) 20% fruit (blue berries, raspberries, blackberries, strawberries, pomegranate, and sometimes small amounts of apple, pear, banana, grapes etc.) and the rest of their diet is Harrison's pellets for parrots. Some pelleted parrot foods are better than others, and everyone has their own preference. Twice a week mine get a bit of mash (beans, chickpeas (their favorite) lentis, brown rice, millet, quinoa, peas, corn, carrots... there are lots of recipes available). Seeds and nuts are treats, used for training etc. I dont want to lecture about nutrition, but its really important. The local rescue where I volunteer has a variety of birds with severe hear conditions due to fatty unbalanced diets.
