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Greater Rhea

Rhea americana

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Fact File


2.5 metres (1.7 m tall)


20 - 40 kg

Clutch size

20 - 30 eggs

life span

15 years in the wild

The Greater Rhea is one of the largest flightless birds in the world. They have long, powerful legs that allow them to run at impressive speeds. They are known for their distinctive grey-brown plumage and large wings, which they use for balance and displays rather than flight.


Greater Rheas are omnivorous, feeding on a variety of plants, seeds, fruits, insects, and small animals. During the breeding season, males build nests and incubate the eggs laid by multiple females, showcasing a unique aspect of their reproductive behaviour.

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Did you know?!

Greater Rheas can form large groups called flocks, especially outside of the breeding season, sometimes comprising up to 100 individuals

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