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    Rights: 123RFRachael Sowerby, Sirtrack Published 14 April 2009 Size: 140 KB Referencing Hub media

    The ostrich, rhea, cassowary and kiwi are all related birds that had a common ancestor in Gondwana. They are now distributed across New Zealand, South America, South Africa and Australia.

    (Top left to right clockwise: Ostrich, rhea, kiwi and cassowary.)