Penguins are a species of flightless bird found in the Mario franchise. (mariowiki.com)
The researchers sequenced the genomes of flightless cormorants and three other cormorant species to zero in on genetic changes possibly linked to flight. (sciencedaily.com)
The Angry Birds Movie (PG for action and rude humor) Animated adventure, inspired by the video game series of the same name, set on an island inhabited by a flock of flightless birds with anger management issues whose patience is suddenly tested by an overwhelming pig invasion. (kamwilliams.com)