email a friend
printable version
VU
Vanikoro Monarch Mayrornis schistaceus

Justification
This species has been uplisted from Near Threatened because, although its population is estimated to be larger than previously thought, it is believed to be in slow decline owing mainly to habitat loss and degradation caused by the gradual expansion of subsistence agriculture. It is therefore listed as Vulnerable on the basis that its population is small and declining.

Taxonomic source(s)
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

Distribution and population
Mayrornis schistaceus occurs on the island of Vanikoro (170 km2) and its small satellite island of Buma in the Solomon Islands. The total population has been estimated at around 5,000 individuals (based on 90 encounters in 1998) (G. Dutson in litt. 2013). It is suspected to be in slow decline owing to limited habitat loss and degradation (G. Dutson in litt. 2013).

Population justification
The global population size is described as numbering around 5,000 individuals, based on 90 encounters in 1998 that suggest a very approximate density of 36 individuals/km2 (G. Dutson in litt. 2013); this is equivalent to c.3,300 mature individuals.

Trend justification
There are no data on population trends; however, the population is suspected to be in slow decline owing to on-going but limited habitat degradation and conversion, primarily through encroachment for subsistence agriculture (G. Dutson in litt. 2013).

Ecology
It occurs within and at the edge of forest, and in regrowth adjacent to forest, to at least 450 m (Dutson 2011, G. Dutson in litt. 2013). It is tolerant of old logged forest but not scrubby or open habitats (Parker 1963, Gibbs 1996, Dutson 2011).


Threats
The primary threat to the species's habitat is from the gradual expansion of subsistence farming (G. Dutson in litt. 2013). Although there are no imminent plans for large-scale commercial logging, there is on-going pressure from multinational logging companies to exploit the forests of Vanikoro (G. Dutson pers. obs. 1997).

Conservation Actions Underway
No targeted conservation actions are known for this species. Conservation Actions Proposed
Conduct regular surveys to monitor the population. Protect remaining tall forest on Vanikoro from logging and agricultural encroachment.

References
del Hoyo, J.; Elliott, A.; Christie, D. 2006. Handbook of the Birds of the World, vol. 11: Old World Flycatchers to Old World Warblers. Lynx Edicions, Barcelona, Spain.

Dutson, G. 2011. Birds of Melanesia: Bismarcks, Solomons, Vanuatu and New Caledonia. Christopher Helm, London.

Gibbs, D. 1996. Notes on Solomon Island birds. Bulletin of the British Ornithologists' Club 116: 18-25.

Parker, S. A. 1963. A note on the habits of Mayrornis schistaceus Mayr (Muscicapidae) of the South-West Pacific. Bulletin of the British Ornithologists' Club 83: 159-161.

Further web sources of information
Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Derhé, M., Dutson, G., Mahood, S., O'Brien, A. & Taylor, J.

Contributors
Dutson, G.

Recommended citation
BirdLife International (2014) Species factsheet: Mayrornis schistaceus. Downloaded from http://www.birdlife.org on 01/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 01/08/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Vulnerable
Family Monarchidae (Monarchs)
Species name author Mayr, 1933
Population size 3300 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 180 km2
Country endemic? Yes
Links to further information
- Additional Information on this species