I read an article yesterday, where a Macaw Owner, who was a treveling parrot show, often fed a large portion of the diet as fruit. She nearly lost one of her Macaws, and was lucky enough to get to an Avian Vet immediately, and after so many lab tests, and her honesty to tell the vet about the Macaws diet learned about the high concentration of sugar in the fruit, caused an imbalance in the birds metabolism, which almost caused the loss of her Macaw. Scott mentioned serving fruit in moderation, and I have to second that, due to the sugars. The trainer was using fruit before the shows, as it was a quick fix for a diet, then after the shows which sometimes lasted a good portion of the day would feed pellets and vegetable chop. If your bird is shying away from fruit, I would take that as a blessing, as it's not as nutritionally good as one might think. Fruits in moderation was what I gathered from the article. This trainer learned her lesson through very expensive lab tests and her honesty. I'm still trying to find the article, and if I do I will post the link for you.