Sixty-six million years ago, at the end of the Cretaceous Period, an asteroid impact near the Yucat n Peninsula of Mexico triggered the extinction of all known non-bird dinosaurs. But for the early ...

A new and nearly complete skull of Vegavis iaai discovered in Antarctica suggests that modern birds originated before the end ...

Near the end of the age of dinosaurs, a bird resembling today's loons and grebes dove for fish and other prey in the perilous ...