What is the largest flying bird?

The biggest wingspan of any bird can be found on the Wondering Albatross, its around 12ft on the larger birds. The Andean Condor for comparison has a wingspan of around 10ft. The heaviest bird is of course the Ostrich which can weigh over 300lbs and the heaviest flying bird so the Kori Bustard which weighs up to 45lbs. read more

Many of the largest flying birds in the fossil record may have been members of the Ciconiiformes. The heaviest flying bird ever, Argentavis magnificens, is part of a group, the teratorns, that are considered an ally of the New World vultures. The largest ibis is the giant ibis (Thaumatibis gigantea). read more

The largest (heaviest) flying bird today is the Kori Bustard (Ardeotis kori) of Africa, males weigh about 18kg, females about half that. The largest bird ever to fly were the Teratorns (a type of Condor), the largest of which, Argentavis magnificens, had a wingspan of 3 metres, and weighed 120kg. read more

Meanwhile, the sarus crane is the tallest flying bird alive, at up to 1.8 m (5.9 ft) tall, standing about as high as Argentavis due to its long legs and neck. The largest known flying creatures overall are not birds, but instead the azhdarchid pterosaurs of the Cretaceous. read more