How did the ostrich cross the ocean? 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 ...

Ostriches, the world's tallest birds, are flightless but incredibly fast runners, reaching speeds of 70 km/h. These social ...

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" ...