What animal has been extinct for the past 100 years?

In 1505, Portuguese explorers discovered the island of Mauritius and the 50 lb flightless Dodos which supplemented their food stores. Imported pigs, monkeys and rats fed on the Dodo Bird's eggs in their ground nests. The last Dodo was killed in 1681.

Before similar looking birds were discovered in the southern hemisphere, the Great Auk or Garefowl was also known as a Penguin. The Great Auk inhabited the coasts and islands of the North Atlantic from Virginia and Ireland to Greenland and Iceland almost to the Arctic Circle. The flightless bird was easily captured. They and their eggs fed many sailors. Shorebirds that breed in a limited number of colonies at only certain locations are highly susceptible to concentrated stresses and the Great Auk was extinct by mid Nineteenth Century.

The Giant Moa from New Zealand was the greatest bird in size. Up to 12 feet in heigth and 550 pounds was the biggest bird in the last 1000 years.