Cockatoos, when hand fed as babies and properly tamed, tend to form extremely strong lifelong bonds with their owners. They are also known to be one of the most affectionate parrot species, craving petting from their owners, and preferring to be on or near them at all times. In fact, some Cockatoos can become depressed if they feel like their owners aren't showing them enough attention, and this can lead to side effect such as feather plucking and destructive behavior. For this reason, they are only recommended for those who have a lot of time to devote to handling and socializing with their pets.
“When she transformed into a butterfly, the caterpillars spoke not of her beauty, but of her weirdness. They wanted her to change back into what she always had been. But she had wings.” Dean Jackson