Over 20 years ago we had an Umbrella Cockatoo. She was one very affectionate, wonderful bird. At that time we had about 9 cats. During the day when we were home we'd have her out on a free standing perch that had toys and food on it. From time to time she decided she wanted to be with me, so she'd climb down the perch and walk on the floor over to where I was sitting. Did I mention 9 cats? What happened? Well, think of Moses and the Red Sea. The cats didn't mess with Bertha.
However, Bertha was never alone with the cats on the perch. When we weren't around, she was in her cage.
Birds like this are a commitment. They need a lot of attention and affection. They have to be with you. My wife and I both worked, so se spent much of her day in her cage. We spent most of our waking moments with her or in the same room with Bertha but it wasn't enough. She started chewing on her legs and we'd take her to her vet (specialized in birds) and get her bandaged up but we couldn't figure out a solution.
We decided we, as her owners, weren't good for her. A vet-tech as the clinic was very happy to get her and we gave her all of Bertha's stuff, including cage and perch for free. We just wanted Bertha to have a good home. Bertha would come to the vet clinic with the gal and went home with her so she got a lot of attention and the destructive behavior stopped. I tried to go to the clinic at lunch time once a month to visit with her.
There was a period when I didn't visit for 6 months but Bertha didn't forget me. When I went in to visit and she saw me, she made this cooing sound that was so full of happiness and love that I've never forgotten it.
A couple years later Bertha started losing weight and the vet had not a clue. He was the leading bird vet in San Diego, so he was no slouch. When the vet-tech called me it was to say that it was recommended Bertha be put down. I went in and held her one last time and stayed with her thru the procedure. That was one lousy day. It can still make me cry.
Anyone considering a bird, in particular the larger ones, should give lengthy consideration to the idea. Find a bird club in your area and talk to members to see if you are right person for a bird. Not every one is.
On Saturdays I would have a cup of coffee with a donut or pastry. Bertha would part the Red Sea and perch on my arm and drink some of my coffee and nibble on the pastry. This was a repeatable occurrence, so she approved of the coffee and pastries. I didn't let her consume much of either, but confined it to being a treat.
Another thing I remember is how much she liked dried peppers, the kind that would burn an asbestos mouth. It didn't bother her, and I think I remember that it was a trait of many of the large birds.
I still miss my Bertha.