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Crested, mostly white, highly social and very loud large parrots that live for decades. Merck does not recommend them for inexperienced owners. Screaming, a heavy need for attention, a powerful beak, hormone-driven behavior and feather plucking are the known difficulties of this group.

Cockatoos (the family Cacatuidae) are parrots native to Australia and nearby islands, known for their crests and mostly white or pale plumage. One of the most commonly kept at home is the sulphur-crested cockatoo and its relatives. Their cute looks can be misleading: Merck does not recommend them for inexperienced owners. This is a family page; species differ, and most of the details are given for the sulphur-crested cockatoo (Cacatua galerita).
Cockatoos are social birds that want attention. ADW says sulphur-crested cockatoos form flocks of about twelve to several hundred in the wild, shelter in the shade during midday heat and gather at communal roosts in the evening. At home you become its flock: it wants to be with you all the time and shouts to let you know.
Merck says some cockatoos can talk in quiet voices but scream very loudly, can demand a lot of attention and handling, can develop hormonal behavior problems and are very likely to chew. In the expert study by Chalmers and colleagues, excessive vocalizing and screaming is discussed among challenging behaviors linked to stress.
Species and individuals vary a lot. This page leans on the sulphur-crested cockatoo; smaller cockatoo species (such as Goffin's) can differ, but the same basic needs apply.
A cockatoo may suit experienced people who can put up with a very loud voice, destructiveness and heavy attention demands every day for many years, have access to a bird vet and can plan for what happens after them. Merck says the group is not recommended for inexperienced owners.
| Situation | A good fit? |
|---|---|
| Apartment | Close to unworkable; the screaming bothers neighbors |
| Family with kids | Careful; a strong beak and attention demands, always supervised |
| Home with a cat or dog | Careful; never leave them alone together |
| Long hours away from home | Not a good fit; social isolation is a main welfare issue |
| First-time bird owners | Not a good fit (Merck doesn't recommend them to the inexperienced) |
Merck says cockatoos are native to Australia and the South Pacific. ADW says the sulphur-crested cockatoo is numerous in northern and eastern Australia, is Least Concern on the IUCN list and has a population over 500,000. But not every member of the family is this widespread: in the European Union's wildlife trade annexes, species such as Cacatua goffiniana, C. haematuropygia, C. moluccensis and C. sulphurea are marked as Appendix I.
ADW gives the sulphur-crested cockatoo a length of 45 to 50 cm (18 to 20 in), an average weight of 800 g (700 to 950 g, about 1.5 to 2 lb) and a wingspan of about 103 cm (41 in). The plumage is white, with yellow tones in the crest and under the wings. Other species in the family can differ in size and color, so when buying, ask for the full species name and its papers, and don't apply the sulphur-crested measurements on this page to every cockatoo.
RSPCA Australia's rules: width at least three times the combined wingspan of a pair; at least two wing beats between perches; height at least three times the head-to-tail length of the largest bird. For the sulphur-crested cockatoo ADW gives a wingspan of about 103 cm; apply that rule to a pair and the width comes out at around six meters (about 20 feet). We worked that out ourselves; RSPCA doesn't give the figure for cockatoos. For most homes the realistic way out is to offer the bird regular safe flight indoors and a very large living space, or to accept that it isn't a fit.
ADW says in the wild they eat mostly seeds, nuts, fruit, blossoms and insects; in captivity they're given fresh fruit, vegetables, seeds, nuts, pellets, legumes and grains, with fatty foods (such as peanuts) kept small because of obesity risk. Merck says a diet heavy in seeds and nuts is high in fat and low in vitamins and minerals; its goal is a balanced pelleted diet with a smaller share of fresh vegetables and fruits. Build the plan with a bird-savvy veterinarian. See foods that are harmful to birds.
Merck says birds hide illness. What follows is for information; talk to a veterinarian who sees birds for diagnosis and treatment.
Merck gives 25 to 50 years for cockatoos. For the sulphur-crested cockatoo ADW gives a wild average of about 40 years (a record high of 57) and a captive average of about 65 years (a record high of 120); the extreme values may not be well verified. Either way, the bird may outlive its owner. Chalmers and colleagues list the care of elderly birds and the lack of a "life plan" among the important welfare issues.
Merck does not recommend them for inexperienced owners. A smaller, quieter species is a safer way to gain experience.
Merck says some individuals can talk in quiet voices, but the scream is its main way of communicating.
ADW says the screech is the main way of keeping in touch with the flock in the wild. Chalmers and colleagues discuss excessive screaming among challenging behaviors linked to stress from stimuli that bother the bird; talk to your bird vet or a behavior specialist about the cause.
Merck says stroking the back can mimic mating behavior, and in cockatoos especially it can raise hormones and make feather plucking worse.
Merck gives 25 to 50 years; ADW gives higher figures.
By Tüylüm · Last checked: November 10, 2026. Compiled from the sources above and written in our own words. Spotted a mistake? Write to [email protected] and we'll fix it right away. Photo from Wikimedia Commons, used under the license shown below it.