Genus of birds
Onychognathus is a genus of starlings native to the Afrotropical realm.
All the species are quite similar, and characterised by rufous primary wing feathers, very obvious in flight. The males are typically mainly glossy black, and the females have dull (sometimes dark, depending on species) grey heads.
The genus was introduced by the German physician and ornithologist Gustav Hartlaub in 1849 with the chestnut-winged starling as the type species. The name "Onychognathus" combines the Ancient Greek words "onukhos" "claw" or "nail" and "gnathos" "jaw".
The genus contains 11 species.
References.
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Further reading.
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