I'm sorry but I disagree, although they have the gene of a wild cockatoo, mine are domestic hand raised birds.
The wild cannot be removed from our cockatoos. They are genetically designed to mate. Being hatched and handfed in captivity does nothing to alter the natural urge to mate. Male Toos have hormones and female Toos have hormones. These hormones are present and mating is innate. Just as with humans if mating cannot occur frustration over not being able to mate can lead to neurotic behavior or personality disorders. Just as you and I have the urge to mate so do cockatoos. Cockatoos have the urge to eat, drink, escape the elements, avoid pain and mate. Domestic hatch doesn't take away any of the innate needs.
Toos find 'mates' in humans sometimes. This is a real tragedy as they cannot mate or be a mate with a human and many toos don't do well even with other toos of their same species due to the tragedy of human imprinting by handfeeding and being raised to be a pet.
Petting and stroking a cockatoo is sending them a message of sexual bonding. Heavy breathing can occur with various cluck sound vocalizations and unusual posturing. This is instinct but then it backfires as when they cannot fulfill the pattern of courting, mating, copulation, laying eggs and incubating, feeding chicks until fledge it can lead to neurosis or psychosis and self mutilation.
Think of it like this; how would any human especially a male deal with not having access to his romantic inclination and acts at all. Think of the frustration, anger and change in personality due to not being able to fulfill an innate need. Then think of someone 'teasing' him in this area while not having access....
The innate needs of eating, drinking, escape from the elements, avoid pain and mating are present fully in our captive hatched cockatoos.
If any owner of any cockatoo 'teases' either knowingly or unknowingly this gets the Too started and then when it cannot be completed the Too can become a chronic screamer, chronic biter, self mutilation, neurotic behavior such as head bobing, making circles with the head, slashing the beak in the air and more.
A cockatoo kept busy each day outside of cage playing with toys, able to rip and shred safe things apart, able to vocalize in the AM and PM, the use of forage feeding toys gets a too tired and played out, and a played out too is a happy too. Toos kept busy are less likely to become 'problem toos', sleep better, eat better as in they are less fussy, and have a good outlet for energy. They were designed to fly, pair up, mate and forage (work) for food. When one of these cannot be met the others must be upped in order to reduce the urge for the one not being able to be met.
So provide lots of time out of cage, lots of cockatoo safe toys, safe toys and other for shredding and tearing, interaction which promotes safe physical activity - exercise, lots of really cool forage feeders and toys available many dishwasher safe to get them working with their minds and body to get their food.
It really doesn't matter what you or I or anyone thinks or agrees or disagrees with as biology is biology and domestic hatched toos retain all the innate instincts. Not one of them magically disappears upon being hatched in captivity. Also our toos are not domesticated. They are wild birds living in captivity or captive wildlife.
Domestication means selective intentional breeding of an animal to remove undesirable traits and make the animal more suitable for living in captivity. Parrots are not domesticated. Never have been and never will be. Any animal be it a parrot, lion, tiger, snake or shark is not domesticated just because it was born or hatched in captivity.