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• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note
Symposiachrus trivirgatus (del Hoyo and Collar 2016) was previously listed as Monarcha trivirgatus. Races diadematus and bimaculatus have been proposed as one or two separate species, with nigrimentum perhaps a third species; although these three taxa appear to constitute a weakly defined group, based on the shorter tail, rather narrow black forehead, slightly darker grey upperparts and less extensive white on distal outer rectrices (not just a function of tail length), vocal differences among them seem pronounced (Eaton et al. 2016); moreover, all Australian populations have a song not shared with any taxa in rest of species’ range; detailed research needed on plumage, morphometric and vocal characters for a robust reassessment of species limits (especially given tentative molecular findings that S populations of the species may be closer to S. guttula than to N populations [Filardi and Smith 2005]). Birds of Morotai, formerly separated as subspecies morotensis, included here within bimaculatus; birds from Gorong (off E Seram) described as subspecies wellsi, but considered indistinguishable from nigrimentum. Form bernsteinii, listed in HBW for Salawati, now considered invalid, being based on an erroneously labelled specimen (probably from Ambon) of nigrimentum (Dekker 2003). Eight subspecies recognized.

Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Population justification: The global population size has not been quantified, but the species is reported to be generally common (Flegg and Madge 1995, Coates et al. 1997). The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Recommended citation
BirdLife International (2024) Species factsheet: Spectacled Monarch Symposiachrus trivirgatus. Downloaded from https://datazone.birdlife.org/species/factsheet/spectacled-monarch-symposiachrus-trivirgatus on 18/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 18/12/2024.