A cockatoo given a seed bowl behaves like a child given a bowl of sweets: the bird chooses eagerly, eats selectively and leaves the rest. Appetite is therefore a poor guide to a good diet for this species. A sound cockatoo diet is built deliberately, with the nutritious base made unavoidable and the favoured foods given a smaller, defined place in the day.
Build the Bowl Around Pellets and Vegetables
Make quality pellets and vegetables the base of the diet. Pellets give a measured foundation in every beakful, instead of a mixture the bird can sort. Vegetables add variety in texture, colour and feeding time: leafy greens, peas, corn, peppers, broccoli, carrot and similar vegetables can rotate through the week, washed and offered in pieces the bird can hold and work through.
Present vegetables as food to engage with, not decoration around a seed dish. Thread pieces on a skewer fixed in the cage, place chopped vegetables in a foraging tray, or offer a whole leaf for shredding and eating together. A cockatoo that spends time handling vegetables eats more of them than a bird that meets them as a side salad beside seed.
Keep fruit and richer extras in a smaller place than vegetables. Fruit is enjoyed and useful in modest amounts, but a bird filling up on sweet extras has less appetite for the base. Judge the bowl at the end of the day: husks and a few vegetable scraps are normal; piles of untouched base beside an empty seed dish show the balance has slipped.
Keep Seed in Its Smaller Place
Give seed as the smaller part rather than the foundation. A measured sprinkle works well as a training reward, scattered into foraging toys, or offered for a short part of the day, where its appeal earns attention without displacing pellets and vegetables. Seed kept in a permanently full bowl becomes the diet by default, because the bird will wait for refills rather than eat the base.
Warn plainly against an all-seed diet. It lets a cockatoo select a narrow range of fatty, favoured seeds while missing much of what pellets and vegetables supply, and a bird settled on seed alone can become reluctant to accept anything else. Weight, feather condition and energy can drift on such a diet while the bird still looks eager at feeding time.
If your cockatoo already eats only seed, change the balance gradually rather than removing seed overnight and hoping hunger teaches the lesson. Mix the base in increasing shares across days, offer vegetables when the bird is hungry in the morning, and ask an avian vet to guide a stubborn conversion, because a cockatoo that refuses food needs supervision, not pressure.
Add a Mineral Source and Watch the Bird
Fix a cuttlebone or a mineral source inside the cage and replace it when it is soiled, crumbled away or left ignored in a corner. Fixed where the bird perches and feeds, it gives a standing source the bird can visit at will, and chewing it also gives the beak useful work between meals. Check it during the daily clean so it does not quietly run out.
Refresh drinking water daily and wash the dish, because cockatoos dunk food and bathe in open water. Watch the whole bird as the diet settles: droppings, appetite, activity and body condition tell you more than a single day's bowl. A bird losing weight, refusing the base for days or growing quiet should see an avian vet promptly.
Keep the feeding plan written where any helper can follow it, including which foods form the base and how seed is limited. Care Teams within KinsLe records who fed the bird and checked its cuttlebone and when, so a shared household follows one feeding plan.