Ostrich (Struthio camelus): The ostrich is the world's largest and heaviest bird, capable of reaching up to 9 feet (2.7 meters) in height and weighing over 320 pounds (145 kilograms).
Southern Cassowary (Casuarius casuarius): Found in the tropical forests of New Guinea and northeastern Australia
Emu (Dromaius novaehollandiae): The emu is the second-largest living bird by height, native to Australia.
Wandering Albatross (Diomedea exulans): The wandering albatross has the largest wingspan of any living bird
Andean Condor (Vultur gryphus): One of the largest flying birds in the world, the Andean condor has a wingspan reaching up to 10.5 feet (3.2 meters).
Kori Bustard (Ardeotis kori): Native to Africa, the kori bustard is one of the heaviest birds capable of flight, with males weighing up to 42 pounds (19 kilograms).
Great Bustard (Otis tarda): Found in Europe and Asia, the great bustard is another heavy bird capable of flight
Sarus Crane (Grus antigone): The tallest flying bird, the sarus crane can reach up to 6 feet (1.8 meters) in height.