WILDLIFE -- An Amazing Evolutionary Path: Penguin

The South Island of New Zealand, known as a penguin paradise, is home to the largest number of penguin species. In fact, the island is believed to be where the very first penguins appeared. Little penguins lean slightly forward when walking back and forth between their nest and the sea at night, and are said to share features with early penguins. And the forest-dwelling Fiordland crested penguins are believed to have gradually evolved to breed in caves to avoid predators. This episode takes a look at the penguins' lives and reveals the secrets of how the island turned from being their birthplace to becoming their paradise.