||Rothschild & Hartert, 1894
||del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International.
||43 cm. Small duck of montane rivers and lakes. Dark brown head. Body barred and spotted dark brown and off-white. Yellow bill. Orange legs. Similar spp. None of the many species of duck recorded in New Guinea have a yellow bill and uniform chocolate head or a barred body. Whistling-ducks, usually found in the lowlands, combine rather plain heads with pale spots or stripes on the flanks and Australian White-eyed Duck Aythya australis has uniformly plain brown plumage. Voice Various calls only given in courtship. Hints Elusive and rather unpredictable at all known sites.
|Red List Category & Criteria:
||Symes, A. & Butchart, S.
||Beehler, B., Bishop, K., Hornbuckle, J., Mack, A., Whitney, B. & Dutson, G.
||Bird, J., Butchart, S., Derhé, M., Mahood, S., O'Brien, A. & Pilgrim, J.
This species is widespread, from the low foothills to the highest alpine tarns; nonetheless, it persists in small numbers wherever it occurs, and its specialized habitat requirements ensure that its global population will remain small. It may be declining through hunting and habitat degradation and therefore qualifies as Vulnerable, although further information may show that it is less threatened than currently thought.
|Previously published Red List assessments:|
- 2008 – Vulnerable (VU)
- 2007 – Vulnerable (VU)
- 2004 – Vulnerable (VU)
- 2000 – Vulnerable (VU)
- 1996 – Vulnerable (VU)
- 1994 – Vulnerable (VU)
- 1988 – Lower Risk/least concern (LR/lc)
|Range Description:||Salvadorina waigiuensis is endemic to the mountains of New Guinea (Papua, formerly Irian Jaya, Indonesia and Papua New Guinea). It is rare and local at lower altitudes. There are records at 70m in the Lakekamu Basin, but it occurs across the island in suitable montane habitat. There are recent records from few locations, a consequence of the inaccessibility of most of its range and the species's unobtrusive, shy and perhaps nocturnal habits (Coates 1985, Beehler et al. 1986, K. D. Bishop in litt. 1994, J. Hornbuckle in litt 1999). The population has been variously estimated to be 2,500-20,000 birds and stable or slowly declining (Callaghan in prep., Callaghan and Green 1993). More recently (2005, 2008) the species was observed using an ephemeral lake at 1650 m in the Foja Mts of western New Guinea (B. Beehler in litt. 2012). This indicates that its movements are quite widespread and that it can cross expanses of closed forest in search of ideal habitat. |
Indonesia; Papua New Guinea
|♦ Continuing decline in area of occupancy (AOO):||Unknown|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||234000|
|♦ Continuing decline in extent of occurrence (EOO):||Unknown||♦ Extreme fluctuations in extent of occurrence (EOO):||No|
|♦ Number of Locations:||11-100||♦ Continuing decline in number of locations:||Unknown|
|♦ Extreme fluctuations in the number of locations:||No||♦ Lower elevation limit (metres):||600|
|♦ Upper elevation limit (metres):||4100|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The total population is estimated to number 2,500-20,000 individuals,and is thus best placed in the band 2,500-9,999 mature individuals.|
Trend Justification: Some local extinctions have been recorded and the species as a whole is suspected to be declining at a moderate rate, owing to hunting, predation by dogs and habitat degradation (Coates 1985, Callaghan and Green 1993).
|Current Population Trend:||Decreasing|
|♦ Number of mature individuals:||2500-9999||♦ Continuing decline of mature individuals:||Yes|
|♦ Extreme fluctuations:||No||♦ Population severely fragmented:||No|
|♦ No. of subpopulations:||2-100||♦ Continuing decline in subpopulations:||Unknown|
|♦ Extreme fluctuations in subpopulations:||No||♦ All individuals in one subpopulation:||No|