When humans arrived in New Zealand they set about dramatic changes to the landscape, which in turn impacted birdlife.
As we know, some species - like the moa - were hunted to extinction, while others fell victim to newly introduced predators and habitat destruction.
But a new study from the University of Otago is looking back even further to the ice age to see how birdlife responded during that period.
Jesse is joined by Pascale Lubbe, Postdoctoral Research Fellow in Molecular Ecology at the University of Otago.