Ep 4. A very strange parrot

Most parrots are colourful and fly in noisy flocks, but New Zealand's kakapo breaks all the rules. It's been called the strangest parrot in the world. How did it get to be so bizarre? In search of clues we'll venture to one of its last refuges. With only 154 kakapo left, a hardy team of researchers is attempting to preserve this dying lineage in a race against time.