Tanygnathus is a genus of parrots in the Psittaculini tribe, of the superfamily of Psittacoidea (true parrots).
Its species are native to Southeast Asia and Melanesia.
Taxonomy The genus Tanygnathus was introduced by the German naturalist Johann Wagler in 1832. The type species was subsequently designated as the great-billed parrot (Tanygnathus megalorynchos) by the English zoologist George Robert Gray in 1840. The name Tanygnathus combines the Ancient Greek words tanuō "to stretch out" and gnathos "jaw".
The genus contains five species: Image Name Distribution Great-billed parrot, Tanygnathus megalorynchosislands of Maluku, Raja Ampat, Talaud, Sangir, Sarangani, the Lesser SundasBlue-naped parrot, Tanygnathus lucionensisPhilippinesBlue-backed parrot, Tanygnathus everetti Philippines Black-lored parrot, Tanygnathus gramineusthe Indonesian island of Buru.Azure-rumped parrot, Tanygnathus sumatranus Indonesia.
Genetic analysis has supported reclassifying all 4 species under Psittacula, making Tanygnathus a synonym of the former genus.
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