For many years we have known that a pair or two of Eastern Rosellas have sometimes been visiting our Tanekaha tree. There's no mistaking the 'kwink kwink' call and their parrotty-monkey chattering to each other. And the brilliant flash of bright colors looks splendidly exotic as they swoop over the house. But the dense vegetation (and possibly a healthy respect for our cats - now deceased) has precluded a decent look until the other day when a couple came down to the lawn.
They are almost certainly the offspring of original escaped caged birds, brought from Australia. There's mixed reaction to them here as they like to eat orchard fruits. But I think they are lovely.