Giant flightless bird wandered the Arctic 50 million years ago

Strange as it may seem, a bird bigger than Big Bird once lived above the Arctic Circle. The flightless bird, known as Gastornis, roamed Ellesmere Island next to Greenland about 50 million years ago, even during the twilight months of winter. Once thought to be a menacing predator, Gastornis -- which weighed several hundred pounds -- was more likely a vegan that munched on foliage, nuts, seeds and fruits.