Ostrich (Struthio camelus)The ostrich is the largest bird in the world, with males standing around 8 to 9 feet (2.5 to 2.7 meters) tall and weighing up to 350 pounds (160 kilograms).
Southern Cassowary (Casuarius casuarius)These birds are native to New Guinea and northern Australia. They can reach heights of up to 5.9 feet (1.8 meters) and weigh around 130 pounds (60 kilograms).
Emu (Dromaius novaehollandiae) The emu is the second-largest bird by height, commonly found in Australia. They can grow up to 5.9 to 6.2 feet (1.8 to 1.9 meters) tall and weigh up to 130 pounds (60 kilograms).
Kori Bustard (Ardeotis kori)The Kori bustard is a large bird native to Africa. Males can weigh around 35 pounds (16 kilograms) and have a wingspan of up to 9.5 feet (2.9 meters).
Great Bustard (Otis tarda)This species is found in parts of Europe and Asia. Males can weigh up to 35 pounds (16 kilograms) and have a wingspan of around 8.5 feet (2.6 meters).
Sarus Crane (Antigone antigone)The sarus crane is a large crane species found in South Asia. They can reach heights of up to 6 feet (1.8 meters) and have a wingspan of about 8.2 to 8.9 feet (2.5 to 2.7 meters).
Andean Condor (Vultur gryphus)The Andean condor is one of the largest flying birds, found in the Andes Mountains of South America. They can have a wingspan of up to 10.5 feet (3.2 meters).
Dalmatian Pelican (Pelecanus crispus) This species of pelican is one of the largest water birds. They can have a wingspan of up to 11.5 feet (3.5 meters).
Greater Adjutant (Leptoptilos dubius) This stork species, found in South and Southeast Asia, can stand up to 5 feet (1.5 meters) tall with a wingspan of about 8 feet (2.4 meters).
Royal Albatross (Diomedea epomophora)The royal albatross is a seabird with the largest wingspan of any living bird, reaching up to 11.4 feet (3.5 meters).