Though we didn`t see a Kiwi, the Weka Birds could be encountered easily along the Heaphy Track. The light-brown, chicken-sized, fligtless birds are rather inquisitive. Even if you just sit in the open having a break, they often tend to come along and curiously inspect you and your equipment.
Another species that was often encountered in pairs was the little fantail. The swirl their long tails almost peackock-like in order to disturb insects and often come quite close to hikers.
The beautiful wood pigeons are rare, but I saw three during the hike on Heaphy.
Favorite thing: NZ's variety of native birds is something I really like. Many of them are though endangered, so you will see them in various wildlife reserves throughout the country.