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 ...

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 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" ...