||Kolombangara Leaf-warbler, Kolombangara Leaf Warbler, Kulambangra Warbler, Sombre Leaf-warbler, Sombre Leaf-Warbler
||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.
||11 cm. Small, stout, dumpy warbler. Heavy bill and long, stout legs are dark horn. Long, fine supercilium contrasts with dark forehead, fading into dreary olive upperparts with faint wing-bar. Underparts paler and brighter with obscure streaks. Similar spp. Island Leaf-warbler P. poliocephalus slighter with longer tail, brighter supercilium, greyer head with slight coronal stripe and plain yellow underparts. Voice Jumble of three to six high-pitched notes, shorter and sharper than P. poliocephalus and metallic tzik call. Hints Listen in the highest, mossy forest, where it forages in pairs, usually on moss and epiphyte-laden branches.
|Red List Category & Criteria:
||Butchart, S. & Symes, A.
||Dutson, G., Iles, M. & Filardi, C.
||Derhé, M., Dutson, G., Ekstrom, J., Mahood, S., Pilgrim, J., Stattersfield, A.
This rather inconspicuous warbler is listed as Vulnerable on account of its very small range and population. If further research shows that its population is declining or fluctuates with natural events, it may be uplisted to a higher category of threat.
|Previously published Red List assessments:|
- 2012 – Vulnerable (VU)
- 2008 – Vulnerable (VU)
- 2006 – Vulnerable (VU)
- 2004 – Vulnerable (VU)
- 2000 – Vulnerable (VU)
- 1996 – Vulnerable (VU)
- 1994 – Vulnerable (VU)
- 1988 – Threatened (T)
|Range Description:||Phylloscopus amoenus is endemic to the extinct volcano of Kolombangara, Solomon Islands, where it has been recorded above c.1,200 m and is presumed to occur to the summit at 1,740 m, at least on the Northeastern side (C. Filardi in litt. 2012). Its total range is therefore 21 km2, although much of this is unsuitable, being open forest on the inner slopes of the volcanic caldera. No more than two pairs have been recorded on any one visit, but it is estimated that the population could number 1,000-2,000 individuals. At the highest elevations on Kolombangara this bird appears to be the second most abundant passerine, behind Hermit White-eye Zosterops murphyi, with loose groups of 6-8 individuals encountered at times (C. Filardi in litt. 2012). There is no evidence of any long-term population changes (Buckingham et al. 1995, G. Dutson pers. obs. 1998, M. Iles verbally 1998, Hornbuckle 1999a). |
|♦ Continuing decline in area of occupancy (AOO):||Unknown|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||60|
|♦ Continuing decline in extent of occurrence (EOO):||Unknown||♦ Extreme fluctuations in extent of occurrence (EOO):||No|
|♦ Number of Locations:||1||♦ Continuing decline in number of locations:||Unknown|
|♦ Extreme fluctuations in the number of locations:||No||♦ Lower elevation limit (metres):||1200|
|♦ Upper elevation limit (metres):||1740|
|Range Map:||Click here to open the map viewer and explore range.|