New Zealand has set itself an environmental goal so ambitious it's been compared to putting a man on the moon: ridding the entire nation of every last rat, opossum and stoat.
Then humans arrived, bringing predators with them. Rats stowed away on ships. Settlers introduced opossums for the fur trade and weasel-like stoats to control rabbits. The pests destroyed forest habitats and feasted on the birds and their eggs. More than 40 species of birds died out and many others remain threatened, including the iconic kiwi...more here