An exploration of all that is known about the origin of birds and of avian flight. It draws on fossil evidence and studies of the structure and biochemistry of

Scientists have recovered more than a billion fossils, but no discovery has been more breath-taking than the fossils recently found in northern China, findings

"Why are male birds often so brightly colored? Why do some birds lay more eggs than others? Will bird species adapt to climate change? In How Birds Evolve, Doug