• The International Union for the Conservation of Nature upgraded the Okarito kiwi and the Northern Brown kiwi from endangered to vulnerable because of a steady increase in population.
• The number of Okarito kiwi has risen from 160 in 1995 to 400-450 now, and Northern Brown kiwi numbers are also climbing.
• The steady increase is the result of New Zealand’s progress in controlling predators like stoats and cats.

Source:

http://www.newshub.co.nz/home/new-zealand/2017/12/two-kiwi-species-lose-endangered-label-after-conservation-push.html