Flight is a rare skill in the animal world. Among vertebrates, it evolved only three times: in bats, birds, and the ...

There would be at least four times as many flightless bird species on Earth today if it were not for human influences, finds a study led by UCL researchers. The study, published in Science Advances, ...

WELLINGTON, New Zealand (AP) — Research linking New Zealand’s diminutive kiwi with a giant extinct bird from Africa is prompting scientists to rethink how flightless birds evolved. A report published ...

In 1932, the Australian military went to war armed with machine guns and 10,000 rounds of ammunition. They lost. Their ...

Bird species that have lost the ability to fly through evolution have become extinct more often than birds that have retained their ability to fly, according to new research from the University of ...

Scientists have found a new species of flightless bird on Calayan Island in the Philippines, the conservation group BirdLife International said Tuesday. The rare find is dramatic because flightless ...

The cassowary is a terror that can disembowel you, but studying fossil eggs suggest humans were hatching them 18,000 years ago. Freelance writer Amanda C. Kooser ...

Kakapo birds will soon be found on New Zealand’s mainland for the first time in 40 years — thanks to an effort to discover suitable alternative habitats. It’s a boost for conservation efforts, which ...

Researchers examined dozens of bird species in museum collections looking for differences in the feathers and bodies between birds that can fly and birds that can't. They found that when birds evolve ...

The egg definitely came before the chicken in this case — the skeleton is from a modern adult kiwi, the egg from its much bigger, long-extinct cousin, Aepyornis maximus. That's a surprise, because it ...