Paleontologists have unearthed a well-preserved skull fossil that could advance our understanding of avian intelligence.

Navaornis is likened to a sort of Rosetta Stone for decyphering the evolution of bird brains.

Birds descended from the dinosaurs, but researchers have known relatively little about how the bird's brain took shape over millions of years. A new fossil sheds light on that mystery.

The fossil bird, which has been named Navaornis hestiae, lived approximately 80 million years ago in what is now Brazil, before the mass extinction event that killed all non-avian dinosaurs. It was discovered by palaeontologist William Nava, for whom the species is now named after.

A unique fossil discovery in Brazil provides new insights into bird brain evolution, while a study highlights drastic population declines in African elephants over the past 50 years. The skull of a bird species,

Brazil has just identified a new species of fossilized bird from the Late Cretaceous period. Named Navaornis hestiae, it was found in 80-million-year-old rocks from the Adamantina Formation, at the entrance of Presidente Prudente, 558 kilometers from São Paulo.

An almost perfect intermediate between Archaeopteryxand modern birds has been discovered with its skull preserved in extraordinary three-dimension. To find such an intact fossil bird that dates back to the Mesozoic is almost unheard of,