What is the national bird of New Zealand?

New Zealand sits way down at the bottom of the world, completely isolated from everything else, which gave evolution plenty of time to get seriously creative. The islands ended up with some of the weirdest wildlife on the planet, including birds that forgot how to fly, parrots that party all night, and penguins that waddle around like they own the place. But when it came time to pick a national bird for the whole country, which one did New Zealanders pick?