A two-ton wombat, a thousand-pound kangaroo, and a 500-pound bird now known as Genyornis newtoni were spread across the continent.

2吨重的袋熊、1000磅的袋鼠及500磅重现在名为牛顿的这种巨鸟，在当时的大陆上随处可见。

Which is why researchers set out to look for proof that human predation played a role in the demise of Genyornis.

因此研究人员们搜集证据，希望找出远古人类的捕猎对这种巨鸟灭绝产生的影响。