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, ...

Long before big cats, terror birds reigned as apex predators. Here’s how these flightless birds hunted, and why they went ...

Ostriches, emus, rheas and other large, flightless birds are found on six landmasses separated by oceans, but how they reached such far-apart places without the ability to fly has remained an enduring ...

This article originally appeared on The Conversation. Aside from being a delight to watch, flight in birds is regarded by many cultures as a symbol of freedom, and a source of inspiration for humans ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. No other animal is ...

The flightless Aldabra rail went extinct 136,000 years ago when its atoll home sank beneath the waves. Then it evolved again. When you purchase through links on our site, we may earn an affiliate ...