I think of all the pet birds out there, cockatoos are the ones I wish were never domesticated. There are so many wonderful toos that I know and adore, but no matter the degree of care you can give a cockatoo (The sanctuary where I work give the birds nothing but the best!) they still live such sad, sad lives. They are just such intelligent birds, and sticking something like that behind bars is like putting a human behind bars. I know I'd go a little crazy if I was in a cage most of the day! I think that's why so many cockatoos develop such unpredictable behaviors and a lot of them are eventually given up.
Again, so sorry you had to go through this!
Again, so sorry you had to go through this!