Closely related to S. dicruroides, S. velutinus and S. musschenbroeki, with which commonly considered conspecific, but evidence assembled by recent authors#R#R indicates that it merits species status based on characters outlined under those species. Race brachyurus (recognized in HBW) belongs in present species; it has recently been considered a race of S. dicruroides#R or alternatively synonymized with barussarum#R; latter treatment followed here, but further study required. Population of SW Philippines sometimes treated as race minimus. Two subspecies currently recognized.
Food and feeding
Status and conservation
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