|Scientific Name:||Mayrornis schistaceus Mayr, 1933|
|Taxonomic Source(s):||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.|
|Red List Category & Criteria:||Vulnerable C2a(ii) ver 3.1|
|Reviewer(s):||Butchart, S. & Symes, A.|
|Facilitator/Compiler(s):||Derhé, M., Dutson, G., Mahood, S., O'Brien, A. & Taylor, J.|
This species is categorised as Vulnerable because the relatively small population, forming a single subpopulation, is believed to be in slow decline owing mainly to habitat loss and degradation caused by the gradual expansion of subsistence agriculture.
|Previously published Red List assessments:|
|Range Description:||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).|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||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).|
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). Logging was reportedly re-commenced on Vanikoro in 2014 (Pierce 2014).
|Current Population Trend:||Decreasing|
|Habitat and 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).|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Generation Length (years):||4.2|
|Movement patterns:||Not a Migrant|
|Major Threat(s):||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.
|Citation:||BirdLife International. 2016. Mayrornis schistaceus. The IUCN Red List of Threatened Species 2016: e.T22707207A94111027.Downloaded on 19 April 2018.|
|Feedback:||If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided|