The term 'ostrich-like bird' refers to a group of large, flightless birds that are native to Australia and South America. The most well-known of these birds are the MOA (3 letters), RHEA (4 letters), EMU (3 letters), CASSOWARY (9 letters) and Emeu (4 letters). All of these birds have long legs, long necks and small heads, and they are all capable of running at high speeds. They are also omnivorous, meaning they eat both plants and animals.