The unsafe list for a sulphur-crested cockatoo
A sulphur-crested cockatoo must not eat avocado, chocolate, caffeine in any form, alcohol, onion, garlic, apple seeds, stone fruit pits, rhubarb, or salty, fried and sugary human food. Uncooked dried beans and mouldy seed or nuts complete the list. This is a large, long-lived white cockatoo with a raised yellow crest and one of the most mechanically gifted beaks in the parrot world. A sulphur-crested cockatoo unscrews, unclips and prises as a form of entertainment, which changes food safety from a feeding question into a security question.
Persistence is the exposure route to plan around
Where another parrot eats what it is handed, a sulphur-crested cockatoo goes looking. Treat jars, biscuit tins and fruit bowls are puzzles, and a bird left near a kitchen during cooking will sample onion trimmings, garlic skins and avocado peel given half a chance. Cockatoos also demand food socially, screaming and displaying until someone shares, and households that give in teach the bird that persistence produces exactly the salted, seasoned food he should never have. Planning for this species means assuming any reachable food will eventually be reached.
Risks hiding inside apparently bird-friendly food
Fruit must be deseeded and pitted before serving, because the stone in the middle interests this beak as much as the flesh. Nuts must be fresh and stored dry, since a cockatoo offered nuts daily is exposed quickly if a batch turns mouldy. Cooked dishes are unsafe territory even when the main ingredient looks harmless, because onion and garlic disappear into sauces, stuffings and roasted vegetables. Dairy-rich and fried foods also sit badly with a cockatoo, and a seed-only pattern heavy in fatty favourites undermines his diet over time.
Storage, serving and household agreements
Keep banned foods in a room or cupboard the cockatoo cannot access, never in a lidded pot on his side of the kitchen. Serve his meals in the cage or on his stand from a prepared bowl, pit and check produce as you make it, and remove uneaten fresh food before it spoils. Set one household rule for visitors: the cockatoo is never fed by hand from anyone's plate or snack bag, however charming the begging becomes. Written instructions help, because this bird will test every new person for a weaker standard. Give this cockatoo approved destruction instead: fresh safe branches, plain cardboard and wooden toys he is allowed to dismantle, offered on a routine, so his formidable problem-solving energy has a legitimate daily target and the kitchen cupboards become a far less interesting project than the puzzle you have deliberately set for him that morning.
If your cockatoo defeats the storage anyway
Retrieve the food, work out what is missing, and make the bird safe while you check the container he opened for other losses. Contact an avian veterinarian promptly if avocado, chocolate, caffeine, alcohol, onion, garlic or pits were involved, describing how much he likely ate and when. Watch breathing, droppings, energy and appetite and pass those observations on. Then fix the storage failure the same day, and note both the incident and the new arrangement in KinsLe's Care Teams so every feeder benefits from what this determined bird just taught the household.