Birds flying inspire awe — but how much do you know about flight? Learn which bird flies highest, which flying bird is ...

Changes in the number, shape, efficiency and interconnectedness of organelles in the cells of flight muscles provide extra energy for birds’ continent-spanning feats. Weighing in at a single ounce, ...

Birds today make flight look effortless, but its evolution was complex. Scientists are still trying to discover exactly how birds took to the skies, and today, a new perspective has emerged by ...

Millions of birds are expected to take flight across the U.S. Saturday night, Sept. 6, as part of their fall migration, according to a nonprofit that tracks bird migrations, although numbers in ...

Slow-motion footage of baby birds helps scientists uncover how their ancestors took to the skies. Birds today make flight look effortless, but its evolution was complex. Scientists are still trying to ...