Extinct animals | It only took 2,500 people to kill off the world’s biggest birds

A Haast’s eagle divebombing a pair of moas. A new study finds that it only took a few thousand people to kill off the nine species of moas found on New Zealand, an act which also led to the extinction of their only predator, the Haast’s eagle. Image by: John Megahan/Creative Commons 2.5.