| Word | Definitions | Synonyms |
|---|---|---|
| aepyornis | (noun) huge (to 9 ft.) extinct flightless bird of Madagascar | Synonyms: elephant bird |
| archaeornis | (noun) extinct primitive toothed bird with a long feathered tail and three free clawed digits on each wing | - |
| notornis | (noun) flightless New Zealand birds similar to gallinules | Synonyms: Notornis mantelli, takahe |