Kiwi birds, New Zealand's national symbol, are unique animals. But they are in danger of becoming extinct. Who is responsible? And what can be done to save them?

Most parrots are colorful and fly in noisy flocks, but New Zealand's kakapo breaks all the rules. It's been called the strangest and heaviest parrot in the world. With only 154 kakapo left, a team of researchers is attempting to preserve this dying lineag...