It may sound like a joke, but scientists have long been puzzled by how the family of birds that includes African ostriches, Australian emus and cassowaries, New Zealand kiwis and South American rheas ...

Ostriches are the tallest birds in the world, and they live in the grasslands of Africa. They can’t fly, but they can run faster than most land animals. With their long necks, strong legs, and unique ...

Ostriches may be ground-bound, but their ancestors could take flight, a new study says The fearsome Australian cassowary, which cannot fly but is sometimes called "the world's most dangerous bird" ...