Many birds fly, but some, like penguins and ostriches, don't, revealing an evolutionary twist. Flightless birds adapted to ...

But these flightless ducks, sea birds, and parrots will make you do a double-take. We all know ostriches, emus, ... The takahē is a fairly large bird for a rail, about the size of a small turkey.

So when humans first arrived on small islands in the past, they found the flightless birds to be easy sources of protein and often wiped them out — with the dodo of the Indian Ocean island of ...

Ostriches and their flightless relatives are found across the globe not because continental drift forced them apart, but rather because the ancestors of these birds spread across the world through ...

But catastrophe struck about 136,000 years ago, when a major flood swept the atoll — and the flightless birds — beneath the waters of the Indian Ocean, leading to the birds' extinction.

-- What do you think of when you hear the word "kiwi"? a. A yummy green fruit. b. A native New Zealander. c. A small bird that can't fly. At the National Zoo, the answer is definitely "C." The zoo ...

Fossils reveal that an extinct species of flightless bird returned from the dead by re-colonizing its former island home and evolving back into existence twice in less than 20,000 years.

People might wonder why some birds have wings but don’t use them and maybe see it as a strange evolution, ... We’ve picked three videos of our favorite flightless birds for you, so enjoy! 1. Kagu ...

Each evolved separately from small flying birds. Flying between continents Madagascar’s elephant birds, despite looking like moas, are in fact closely related to the small flightless New Zealand ...