Ratite birds are a group of flightless birds that include the EMU (3 letters), RHEA (4 letters), MOA (3 letters), OSTRICH (7 letters), EMEU (4 letters), KIWI (4 letters) and TINAMOU (7 letters). These birds have a flat breastbone, which is why they cannot fly. They are found in many parts of the world, including Australia, New Zealand, South America, and Africa. Ratite birds are also known for their large size and long legs.