Not a Native Bird methinks

I was in Auckland on Saturday. I spoke to Mrs R on the phone back in Welly and she said there had been a strange bird on the deck. We often get the odd Tui enjoying the flax and sitting on the deck to have a sing but I'd never seen anything "strange". I asked what kind of strange and she said parrot strange. I said Kea? She said no, Cockatoo. Don't be silly says I. She said, I knew you wouldn't believe me so I took a photo for when you get back. Whatever, thought I.

Bugger. Looks like a Cockatoo to me. Anyone lost one in Khandallah? I'm pretty sure they're not native birds.....