Masked Lapwing (Vanellus miles) -- known to Kiwis as the Spur-winged Plover (I learned all these common names from the NZ field guide, and got home to discover that Kiwis have very different ideas from the rest of the world about what to call their birds :-) ). Common & conspicuous in the North.
This species was thought to be extinct for fifty years until it was rediscovered in 1948. Small numbers of birds were translocated to several predator-free offshore islands, including Tiritiri Matangi. All of the individual birds there are banded and carefully monitored, but they are free-living. They have done well enough in these offshore sanctuaries that they are starting to release them back on the mainland.
Nesting boxes for the penguins, you can lift the lids off and look in. There were penguins in them, but I didn't get a good photo.
After being prevented from taking my friend's sandwich right out of her hand, this particularly bold takahe circled around for a sneak attack.