Greater Rhea(7 meters tall and 40 kilograms)
The Greater Rheas (Rhea americana) is one of the biggest birds in the Americas. Greater Rias Endemic to Argentina, Bolivia, Brazil, Paraguay and Uruguay. Greater rhea birds are flightless and fast. It has the ability to run at speeds of up to 35 kilometres per hour using its long, well-shaped legs.
With their high speed, they gather in clusters of up to 100 birds during the non-breeding season to protect themselves from predators.
- Appearance: Grey-brown overall with long, light underparts. Males have darker crowns and upperparts. Three-toed feet, unlike the ostrich’s two-toed arrangement.
- Size: Up to 3-5 feet tall (0.9-1.5 meters). About 33-66 pounds (15-30 kilograms). Males are typically larger than females.
- Habitat:Native to open areas like grasslands, savannas, and grassy wetlands in Argentina, Bolivia, Brazil, Chile, Paraguay, Peru, and Uruguay.
- Family Name: Belongs to the Rheidae family, containing only two species: the greater rhea and the lesser rhea.
Top 15+ Biggest Birds in The World (2024)
The common ostrich (Struthio camelus), is the largest bird in the world. There are approximately 10,000 species of birds present on the earth and they are rages from different sizes and shapes from the small bee hummingbird to the largest ostrich.
Ostrich belongs to the infra-class Palaeognathae. It is the tallest and heaviest – around over 2 meters in height (and occasionally reaches 2.8 meters), and weighs up to 160 kg. At this size, the ostrich is a flightless bird, it is known as the fastest animal running on two legs because its run-up speed is much higher than other animals and the speed of birds is 69 km per hour.
A diverse group of flightless birds called ratites involved the emu, rheas, and kiwi. Both the common ostrich and the Somali ostrich are two living species of ostrich. They are large flightless birds of Africa that lay the largest eggs compared to any living land Species. They are the fastest birds on earth as they can run at speeds of up to 70 km/h.