Great Auk

The Great Auk (Pinguinus impennis) is a species of flightless alcid that became extinct in the mid-19th century. It was the only modern species in the genus Pinguinus.

The Great Auk was the original "penguin" -- a massive, flightless, black-and-white Atlantic alcid. It was hunted to extinction by the middle of the 19th century. It had a rapid, wing-propelled underwater flight.

Similar and related species
The Great Auk resembled a larger Razorbill.