Delacour and Jabouille, 1930,
Loquiho, near Cha Pa, north-west Tonkin, Vietnam.
Sometimes placed with S. frontalis and S. oenochlamys in a separate genus, Oenositta, and these three species have sometimes been considered conspecific. Present species, however, occurs together with S. frontalis in Vietnam, overlapping in both range and altitude in NW Tonkin (Fan Si Pan Range) and S Annam (Da Lat Plateau). Relationship with S. oenochlamys more problematic, but Hainan race chienfengensis#R of present species may form link between them (both are yellow-billed, whereas S. frontalis has red bill). Three subspecies currently recognized.
Food and feeding
Status and conservation
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