I have had Kakariki's in my aviari. They are not that rare here in Europe.
Kakariki's come in green, yellow and pied. They are very active happy go lucky birds that use your aviary as a playgym. They can fly like nothing I have ever seen. They are truly acrobats in the sky!
I love the sounds they make, the souds like little goats, "be-e-e-e-e-e".
You just cant keep them with the rest during breedingseason, they become really hormonal and start pestering other birds.
Picture of one of my own:

And I have had barred parakeets (not sure how rare they are over there, but quite common here).
They are beatifull birds, and they act just like little parrots. But they didnt really feel at home in my aviary. I think the budges were too much noise for them. Barred parakeets lookt to me like very shy and easily scared birds. Huddled up in a corner, I never saw them much.
The most bautifull, but rare,birds I have ever seen are the hyacinth macaw and the red tailed black cockatoo. The first you all know. The latter is absolutely beautifull! The female looks like she has stars all over her body.
