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

Justification of Red List category
This species has a restricted range and the area and quality of its habitat are undergoing a continuing decline as a result of ongoing forest loss and degradation. It is therefore classified as Near Threatened.

Population justification
The global population size has not been quantified, but the species is described as fairly common in the lowlands and becoming more common in mountain forests (del Hoyo et al. 2006).

Trend justification
This species is suspected to be declining as a result of ongoing forest loss on Makira. Remote sensing data (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein) indicate that in the ten years to 2021, forest loss in this species' range has been equivalent to c.3-4%. The rate of population decline is therefore placed in the range 1-9% in ten years.

Symposiachrus vidua is endemic to Makira (= San Cristobal), including Ugi and Santa Ana in the Solomon Islands.

The species occurs in primary forest and tall secondary forest to at least 800 m (Clement 2020).

The main threat to this species is forest loss in its range (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Much of the lowlands on Makira have been logged or are under logging concessions.

Conservation Actions Underway
None is known.

Conservation Actions Proposed
Conduct research to determine population size and trends. Regularly monitor the populations at certain key sites. Research its tolerance of degraded forest across an altitudinal gradient. Protect significant areas of remaining primary forest on Makira.

Text account compilers
Vine, J., Butchart, S., Ekstrom, J.

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Recommended citation
BirdLife International (2024) Species factsheet: White-collared Monarch Symposiachrus vidua. Downloaded from https://datazone.birdlife.org/species/factsheet/white-collared-monarch-symposiachrus-vidua on 23/11/2024.
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 23/11/2024.