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, ...

A Tel Aviv University–led study of 160-million-year-old fossils shows that some feathered dinosaurs likely became flightless, challenging the idea that the evolution of flight followed a linear path ...

Freed from the threat of invasive predators, Galapagos birds are performing astonishing feats of return and innovation – 200 ...

Flightless Birds in the World: Birds are some of the most fascinating creatures in the animal kingdom. But what about birds that don’t fly at all? For centuries, humans have envied the freedom of ...

Madagascar’s elephant birds — which weighed as much as three or four people and went extinct several hundred years ago — turn out to be the closest known relatives of New Zealand’s chicken-sized kiwi.

If you encountered an elephant bird today, it would be hard to miss. Measuring in at over 10 feet tall, the extinct avian is the largest bird known to science. However, while you looked up in awe, ...

Birds are known for flying in the sky but not all birds can fly. Some birds spend their lives on the ground or in water and they are still strong and smart. These birds use their leg speed or swimming ...

May 9 (UPI) --Evolution produced the same flightless bird species twice, with each occurrence separated by tens of thousands of years. The phenomena, called iterative evolution, helped bring the ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Flightless birds, like the dodo bird of the small Indian ...

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 ...

Our pet cats share close to 96% of their DNA with wild predators like tigers, meaning they have strong predatory urges that need to be fulfilled. Here’s what happened when one went ‘wild’ on an ...