The Great Auk was a flightless bird the went extinct in the mid-19th century. They lived in the North Atlantic, ranging as far south as northern Spain and also around the coast of Canada, Greenland, Iceland, the Faroe Islands, Norway, Ireland, and Great Britain. They died off because of a combination of climate changes during the Little Ice Age that brought predatory polar bears into their territories, and human hunting. So again, partially human fault. The last pair seen alive were in Iceland in 1844.