The Fiordland crested penguin, or Tawaki, is unusual among penguins—it lives in a rainforest, sometimes deep in caves beneath trees, this one in Shelter Islands is called The Bat Cave by researchers. Scientist Thomas Mattern is on a mission with his Tawaki Project to discover how many penguins there are, what their life cycle is, and where they feed. Turns out, the population is healthy and stable, thriving and feeding as much within the fiords as at sea.