Greater sulfur-crested cockatoo. They become pretty big birds and have pretty powerful beaks as well.
I won't even foster one of those guys. Unbelievably demanding (usually due to poor handling and training as babies), loud, messy and, oh yeah, destructive.
We fostered an umbrella cockatoo once that got pissed off and bit me on the back because I had the temerity to turn my back on him. Crazy bastard.