Flightless birds have had a rough go of it over the past few centuries, with many going extinct — the most iconic being the dodo bird. But not all have perished. Here are four flightless birds that ...

Birds, by design, tend to be small, light and streamlined. Yet there are some that push the boundaries of size. Here is the avian world’s best example of an ultra-heavyweight flyer. Birds of prey are ...

The world’s largest bird, the ostrich, is one of nature’s most surprising creations. While most birds depend on wings to survive, this giant ground-dweller has thrived without ever needing to fly.

Some of the biggest birds on Earth can stand taller than any NBA player and spread their wings wider than kings size bed. There are almost 10,000 species of birds on Earth and they come in all ...

History has not been kind to the elephant bird of Madagascar. Standing nearly 10 feet tall and weighing up to 1,000 pounds — or so researchers believed — this flightless cousin of the ostrich went ...