The forests were dominated by birds, and the lack of mammalian predators led to some like the kiwi, kakapo, weka and takahē evolving flightlessness.
As fragas foron dominadas polas aves, e a ausencia de predadores mamíferos causou que algunhas especies como o kiwi, o kakapo e o takahe evolucionasen sen a habilidade de voar.