Great auk
From Tardis Wiki, the free Doctor Who reference
The Great Auk - originally called the penguin - was a bird found on Earth. (AUDIO: Last Chance)
Penguins were descended from the Great Auk, which was extinct. (COMIC: Polly the Glot)
The Great Auk was worth 800 points in the I-Spyder Book of Earth Creatures if it was spotted. (PROSE: The Last Dodo)
