Prehistoric bird

Prehistoric birds are here considered any species of the Aves and some possible close relatives of more uncertain status that have become extinct before recorded by modern sources.

They are known from fossil and subfossil remains only, and in a few cases may be remembered in folk memory. Such birds are here presented in 2 articles, separated according to the rough date of extinction and the possibility of human influence in their extinction:

* Fossil birds deals with birds from pre-human prehistory, from the earliest Proto-birds to the ancestors of modern species. Famous examples are "Archaeopteryx", "Confuciusornis", "Hesperornis", the "terror birds", "Osteodontornis", and "Argentavis".

* Late Quaternary prehistoric birds is about birds which have gone extinct in the last 30-10.000 years or so, and in most human activity is at least complicit in their disappearance. Some are known from native tales, some others are tentatively suggested to have lasted into the age of written history. These include, for example, a species of mihirung, the moa and Haast's Eagle, and Merriam's Teratorn.