So have we taken away ius soli? What happens is you're born here to non kiwis? Can you become a kiwi at 18 I suppose? Not really relevant to Mandi's kid but important to the Nix given our large migrant population.
From what I understand, the mere act of being born here to non-resident parents means that you're not automatically a citizen. Obviously that doesn't mean that you can't become a citizen through residency for example.
This is correct. A child born here only acquires right to residency / citizenship if at least parent was a permanent resident or citizen at the time of the child's birth. Temporary permit for a parent grants temporary permit for the child.
This was enacted in 2006 to close a loophole where children born here to people only briefly visiting NZ in last stages of pregnancy would be granted permanent residency which could still be claimed by the (now grown up) child even decades later. The loophole to claw back hospital costs of delivery was not closed till years later, with mixed success.