I was thinking the same thing, but I will sayw hat I say to all would be cockatoo owners who come to us looking to adopt one... they are a handful and one of the most high maintenance companion birds available. People buy them because they are charming and funny and talk well and are cuddly to no end, but like all things beuatiful, the beauty blinds you from their true nature. Every rose has its thorn

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If you have allergies of ANY kind, do not own a cockatoo. The dander they produce will clog AC units, fans and cover everything in your house with a thin white sheen. You will need to dust continually (no lie). We have an industrial air purifier in one of our cockatoo rooms that houses 15 cockatoos and we have to literally dump it out daily.
Cockatoos like feet and often attack toes. So if you like to walk barefoot in the house, be prepared to take bites. if you wear slippers or crocks, be prepared to replace them regularly if you plan on letting your too roam. Toos are ground birds, many people don't know that, and they prefer to be on the ground, but once there, they get VERY rambunctious and often territorial (hence the foot fetish)
Toos are LOUD. They have one of the loudest and farreaching vocalizations, meant to be heard over a mile away, and trust me, you can. Keep this in mind based on where you live, how close your neighbors are and if they are forgiving of being woken up at 6am by too screams.