From oceans to mountains, these birds with massive wingspans expertly dominate the skies, flying great distances.

Bigger sizes, while a liability in the air, can keep flightless birds safer on land. But the largest flying birds can still get really big! Here, we look at different measures of "big": wingspan ...

Holding the record for the largest wingspan of any living bird, the wandering albatross is a master of oceanic flight. It can travel thousands of kilometres using wind currents, barely needing to ...

Compare that to today’s heaviest flying bird — the great bustard — which weighs just around 35 pounds. Despite their differences, these two behemoths rely on the same principles of flight.

Scientists have identified bones of the largest flying bird ever found -- an ancient soaring seabird with a wing span of at least 21 feet. Daniel Ksepka, curator of science at the Bruce Museum ...