Sadly most of the native birds in NZ are rare, one way or another. A lot to do with loss of habitat and introduced predators, something to do with the fact that they only exist on a small group of islands far from anywhere else so have no where else to go. It doesn’t help that many of them are flightless!
I was in Wellington a couple of months ago and planned a trip to the Zealandia Sanctuary – its a lot like the Orokonui Cloud Sanctuary in Dunedin but more mature and a much wider range of birds and critters that were easily viewable wandering around the paths.
The highlight was meeting these tiny but incredibly curious and fearless NZ Robins (not the extremely rare Black Robin). They like to fossick in the leaf litter and I remembered that if you scratch around in it with your foot the insects are disturbed which attracts the birds back and this tip worked a treat. We must have spent a good half an our being utterly delighted by these little birds and they are a photographers treat because they fossick happily for a minute or so, then find a perch and pose and pose and pose from side to side!
I was utterly charmed and I hope I get to meet them again sometime and if you ever get the chance to visit Zealandia I highly recommend it.