What birds cant fly?

Cassowary. The cassowary is a bird you don't want to mess with. This giant bird, a native of Australia and the surrounding islands, is in the heavyweight class. The only bird heavier is the ostrich (which we'll get to later). read more

No list of flightless birds would be complete without the penguin. All 18 species of penguin are unable to fly, and are in fact better built for swimming and diving, which they spend the majority of their time doing. Their short legs and stocky build give them a distinctive waddling walk. read more

Many domesticated birds, such as the domestic chicken and domestic duck, have lost the ability to fly for extended periods, although their ancestral species, the red junglefowl and mallard, respectively, are capable of extended flight. read more