Taxonomic note
Rhabdotorrhinus waldeni (del Hoyo and Collar 2014) was previously placed in the genus Aceros.
Taxonomic source(s)
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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
A2cd | A2cd; C2a(i) | A2cd; B1ab(i,ii,iii,iv,v); C2a(i); D2 |
Year | Category | Criteria |
---|---|---|
2016 | Critically Endangered | A2cd |
2015 | Critically Endangered | A2cd |
2013 | Critically Endangered | A2cd |
2012 | Critically Endangered | A2cd |
2009 | Critically Endangered | A2c,d |
2008 | Critically Endangered | |
2006 | Critically Endangered | |
2004 | Critically Endangered | |
2000 | Critically Endangered | |
1996 | Critically Endangered | |
1994 | Critically Endangered | |
1988 | Not Recognised |
Migratory status | not a migrant | Forest dependency | High |
Land mass type |
Land-mass type - shelf island |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence breeding/resident (km2) | 31,000 | medium |
Number of locations | 2-5 | - |
Severely Fragmented | - |
Value | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | 1000-2499 | good | estimated | 2007 |
Population trend | Decreasing | medium | suspected | - |
Decline (3 years/1 generation past) | - | - | - | |
Decline (5 years/1 generation past) | - | - | - | |
Decline (10 years/1 generation past) | - | - | - | |
Decline (10 years/3 generation future) | - | - | - | |
Decline (10 years/3 generation past and future) | - | - | - | |
Number of subpopulations | 2-100 | - | - | - |
Percentage in largest subpopulation | 1-89 | - | - | - |
Generation length (yrs) | 19 | - | - | - |
Population justification: There were 752 active nest holes in the Central Panayan Mountain Range in 2007 (E. Curio in litt. 2008). This represents 1,504 mature individuals, and so it is sensible to estimate the mature population to number between 1,000-2,499. This equates to 1,500-3,749 individuals in total, rounded here to 1,500-4,000 individuals.
Trend justification: This species's population is presumed to have decreased extremely rapidly in line with habitat loss, degradation, and hunting within its range over the last three generations. Although conservation measures on Panay have successfully reduced nest poaching, habitat loss and degradation is continuing and declines may continue in the future.
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
Philippines | N | Extant | Yes |
Country/Territory | IBA Name |
---|---|
Philippines | North-west Panay peninsula (Pandan) |
Philippines | Central Panay mountains |
Philippines | Mount Kanla-on Natural Park |
Philippines | Southwestern Negros |
Philippines | Cuernos de Negros |
Philippines | Mount Silay and Mount Mandalagan (Northern Negros) |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Lowland | major | resident |
Forest | Subtropical/Tropical Moist Montane | suitable | resident |
Altitude | 300 - 1200 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
|
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Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Past, Unlikely to Return | Majority (50-90%) | Rapid Declines | Past Impact | ||||||
|
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Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Past, Likely to Return | Majority (50-90%) | Slow, Significant Declines | Past Impact | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
Past, Likely to Return | Whole (>90%) | Rapid Declines | Past Impact | ||||||
|
Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
---|---|---|---|---|---|---|
Food - human | - | - | Non-trivial | Recent | ||
Other household goods | - | - | Non-trivial | Recent | ||
Pets/display animals, horticulture | - | - | Non-trivial | Recent |
Recommended citation
BirdLife International (2023) Species factsheet: Rhabdotorrhinus waldeni. Downloaded from
http://www.birdlife.org on 02/02/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 02/02/2023.