flight
less
1
(of a bird or animal) Unable to fly
- Penguins are flightless birds, but they swim expertly in the ocean.
- The flightless ostrich is the world's largest living bird.
- New Zealand's kiwi is a small, flightless bird active at night.
- Scientists study how some insects evolved into flightless species.
- The dodo was a flightless bird that went extinct centuries ago.