The fossil bird, which has been named Navaornis hestiae, lived approximately 80 million years ago in what is now Brazil, ...

Navaornis fills a ~70-million-year gap in our knowledge of the evolution of the unique bird brain. Navaornis hestiae (centre) ...

Researchers hope the "exquisitely preserved" fossil will cast new light on an enduring mystery in paleontology.

Birds descended from the dinosaurs, but researchers have known relatively little about how the bird's brain took shape over ...

Skeleton of the terror bird Titanis walleri at the Florida Museum of Natural History. (Amanda via Wikimedia Commons / Creative Commons Attribution 2.0 Generic) (CN ...

Birds often invoke images of cheerful chirping or graceful gliding through the air. However, some of these peaceful birds can ...

"Scientists have struggled to understand how and when the unique brains and remarkable intelligence of birds evolved. The ...

A 'one of a kind' fossil discovery could transform our understanding of how the unique brains and intelligence of modern birds evolved, one of the most enduring mysteries of vertebrate evolution.

The largest bird on Earth is the ostrich, which can stand as tall as 9 feet and weigh between 220 and 350 pounds. Although flightless, it can sprint up to 45 mph. The emu is native to Australia ...

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As the birds move off to another woodlot, their clucking calls can be heard as they sail overhead in a seemingly never-ending ...

(CNN) — Millions of years ago, long-legged, big-beaked, meat-eating “terror birds” stalked the Americas. The imposing creatures ruled the roost as top predators ...