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

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.

Interestingly, this fossil fills a 70-million-year-long gap in our knowledge between the early bird-like dinosaurs ...

The brains of today's birds facilitate a level of cognitive prowess and behavioral complexity rivaled only by mammals. But ...