It's difficult to know what birds "think" when they fly, but scientists in Australia and Canada are getting some remarkable new insights by looking inside birds' heads.
Around 45 million years ago, a 4.6 foot-tall (1.40 meters) flightless bird called Diatryma roamed the Geiseltal region in ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback