Nature · 2
What is the only bird that cannot fly?
Answer
Ostrich and Emu
Both ostriches and emus are flightless birds, though the ostrich is the largest bird species on Earth, reaching up to 2.8 meters in height. Ostriches run at speeds up to 70 km/h and can kick with tremendous force, while emus are endemic to Australia with similar evolutionary losses of flight capability. These birds evolved flightlessness in isolated environments where predators were scarce and running became a more effective survival strategy.
💡 Did you know?
Ostriches and emus lost flight in isolated environments; ostriches run 70 km/h and can kick lethally—speed replaced wings as survival.
Other options people guess
- Ostrich
- Emu
- Cassowary
Topics
- birds
- Africa
- flightless
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