flightless

1 of 1adjective

/ˈflaɪtləs/

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.