From 9-foot tall ostriches to albatrosses with gargantuan wingspans, here are some of the biggest birds in the world.

Scientists have discovered that the world's most dangerous bird can call to its mate at frequencies humans can't hear. In ...

With dagger-like claws, powerful legs, and a notoriously aggressive temperament, the cassowary earns its title as the most ...

If you have ever looked closely into a rockpool along the U.K. coastline, you may have been lucky enough to find a tiny ...

A woman and her daughter narrowly escaped a dangerous encounter with two hungry cassowaries — an adult and its chick — in the state of Queensland, Australia.

Beyond their charming facade, certain bird species exhibit surprising aggression when threatened. Cassowaries, with their ...