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.

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

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