Ratite: meaning, definitions and examples
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ratite
[ ˈrætɪt ]
bird classification
Ratites are a group of large, flightless birds characterized by a flat breastbone without the keel, which is necessary for flight. This group includes species such as ostriches, emus, and kiwis. They are typically found in the Southern Hemisphere.
Synonyms
flightless bird
Examples of usage
- The ostrich is the largest ratite in the world.
- Kiwis are unique ratites found only in New Zealand.
- Emus are fast-running ratites that can reach speeds up to 30 miles per hour.
Etymology
The word 'ratite' comes from the Latin word 'ratis,' meaning 'raft,' which relates to the flat shape of the breastbone found in these birds. This term was introduced in the early 19th century to classify a diverse group of flightless birds, distinguishing them from their flying counterparts. The classification of ratites has undergone significant changes with advancements in the understanding of bird phylogeny, particularly through molecular genetics. Initially, ratites were thought to be a single lineage, but current research suggests that they represent several distinct lineages that evolved flightlessness independently in different environments.