Jgrnot
I have just returned from my second NZ trip and here are my recommendations for the birds that you want to see.
Kaka - very common on Stewart Island around the town
Kiwi - I have only seen two species -
Stewart Island/Fiordland Brown Kiwi - seen on Stewart Island on an arranged night trip (google Philip Smith and Kiwi)
Little Spotted Kiwi - Tiritiri Mantangi Island (off Auckland) there is a bunk house there where you can stay overnight cheaply, but it is wise to book well in advance. the kiwis here are fairly easy to see, providing the weather is OK just ask the staff there where is the best place to look and don't forget your flashlight!
Kea - there is usually a couple around the car park at Homer Tunnel on the way to Milford Sound - the short walk from the car park here is very good for Rock Wren another of NZ endemics.
Takahe - re-introduced on Tiritiri Mantangi where they wander arounud the bunk house. I also heard that you can see wild ones on a trek from Te Anau.
other endemics......
NZ Dabchick - lake Rotorua
Yellow-eyed Penguin - several viewable colonies around Dunedin
Fiordland Crested Penguin - Milford Sound during the NZ summer
Spotted Shag - common around the coastline of South Island
King Shag - Marlborough sound boat trip
Stewart Island Shag - Stewart Island and the SE coast of South Island
Blue Duck - Ruatiti Domain central North Island
Paradise Shellduck- common
Brown Teal - introduced on Tiritiri Mantangi
NZ Scaup - common
NZ Falcon - near mythical
Weka - widespread - Ulva Island just of Stewart Is.
Variable Oystercatcher - Stewart Island and Miranda wetland Centre (North Island)
Black Stilt - Twizel, South Island
Banded Dotterel - common
NZ Dotterel - Miranda wetland Centre
Wrybill - Miranda wetland Centre
Black-billed Gull - common
Black-fronted Tern - common
NZ Pigeon - common and very easy on Stewart Is.
Yellow-crowned Parakeet - common eg Lake Gunn on the way to Homer Tunnel
Red-crowned Parakeet - common on Tiritiri Mantangi
Rifleman - common
Rock Wren - the Alpine Loop track at Homer Tunnel
Grey Warbler - common
Fernbird - localised and can be tricky -
www.fernbirds.co.nz
Brown Creeper - straight forward
Whitehead - Tiritiri Mantangi
Yellowhead - Haast Pass and also Ulva Is.
Tomtit - common
NZ Robin - reasonably common
Kokako - Tiritiri Mantangi
Tui - common
Stitchbird - Tiritiri Mantangi
Bellbird - common
Saddleback - Tiritiri Mantangi
Plus a trip to Kaikoura for stunning views of Albatrosses.
You'll have a great time NZ is simply superb.
cheers,
Mark