What is the largest flying bird in the world?

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

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

Weighing up to 20 kg, kori bustard is the largest flying bird in the world, native to Africa. Male kori bustard is two times much heavier than the female. This 4 ft. Long bird has a wide wingspan that measures up to 9 ft. read more

Native to tropical rain forests of Indonesia and Australia, the Southern Cassowary is the second largest bird in the world. This large, dark flightless bird measures 5.1 feet in height and 75 to 80 kg in weight. read more