PA/CreativeCommonsNew Zealand plans to eradicate all its rats. Before the arrival of humans, the only land mammals in New Zealand were marsupials — those with pouches, like kangaroos and wallabies — and monotremes, egg-layers such as the platypus. But in the 13th century, Polynesian explorers brought mice and rats. Later settlements by Europeans brought larger animals. They have since killed about a third of native bird species, and the kiwi, the national symbol, is under threat, the BBC reported. Wellington has introduced a target, Predator Free 2050, and by using infrared cameras, self-resetting traps, and slow-acting poisons, plans to clear the nation of the latecomers by midcentury. |