Largest prehistoric flying bird

The largest known flying bird was the giant teratorn Argentavis magnificens, which lived in Argentina about 6-8 million years ago. Fossil remains discovered at a site 160 km (100 miles) west of Buenos Aires, Argentina in 1979 indicate that this gigantic vulture-like bird had a wing span of over 6 m. (19 ft 8 in) (possibly up to 7.6 m (25 ft)) and weighed about 80 kg (176 lb). This compares to the largest wingspan of any living species of bird which is currently held by a male wandering albatross (Diomedea exulans) of the southern oceans, with a wingspan of 3.63 m. (11 ft 11in)