CR
Yellow-crested Cockatoo Cacatua sulphurea



Taxonomy

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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
A2cd+3cd+4cd A2cd+3cd+4cd A2cd+3cd+4cd

Red List history
Year Category Criteria
2016 Critically Endangered A2cd+3cd+4cd
2015 Critically Endangered A2cd+3cd+4cd
2013 Critically Endangered A2cd+3cd+4cd
2012 Critically Endangered A2cd+3cd+4cd
2010 Critically Endangered A2c,d; A3c,d; A4c,d
2009 Critically Endangered A2c,d; A3c,d; A4c,d
2008 Critically Endangered
2004 Critically Endangered
2000 Critically Endangered
1996 Endangered
1994 Endangered
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,360,000 medium
Number of locations 11-100 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 1500-7000 medium estimated 2007
Population trend Decreasing poor 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) 80-100 - - -
Decline (10 years/3 generation past and future) 80-100 - - -
Number of subpopulations 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 13 - - -

Population justification: Based on recent surveys within various parts of the species's range, C. Trainor in litt. (2007) has estimated the global population at fewer than 7,000 individuals: 3,200-5,000 on Sumba (although perhaps as few as 562 in 2012, Burung Indonesia in prep), 500 on Komodo, 200-300 on Timor Leste, 200-300 on Sulawesi, 20-50 on West Timor, 40-70 on Flores, 50-100 on Sumbawa, 100 on Rinca and c.700 other birds in total. It is best placed in the band 2,500-9,999 individuals, equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.

Trend justification: This species has declined extremely rapidly owing to international trade in the species and widespread deforestation within its range. Declines have been documented in recent years, even where trade is not so obvious, such as on Komodo where an estimated decline of 60% occurred between 2000 and 2005.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Indonesia N Extant Yes
Singapore I Extant Yes
Timor-Leste N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Indonesia Bogani Nani Wartabone
Indonesia Buat - Soe
Indonesia Buton Utara
Indonesia Camplong
Indonesia Danau Tempe
Indonesia Gunung Lewotobi
Indonesia Gunung Muna
Indonesia Gunung Rinjani
Indonesia Gunung Tambora
Indonesia Gunung Timau
Indonesia Komodo - Rinca
Indonesia Laiwanggi Wanggameti
Indonesia Lore Lindu
Indonesia Luku Melolo
Indonesia Manupeu Tanadaru
Indonesia Mbeliling - Tanjung Kerita Mese
Indonesia Morowali
Indonesia Nangarawa
Indonesia Nusa Penida
Indonesia Pasoso
Indonesia Pegunungan Tokalekaju
Indonesia Popayato - Paguat
Indonesia Poronumbu
Indonesia Pulau Kalatoa
Indonesia Pulau Moyo
Indonesia Pulau Tana Jampea
Indonesia Rawa Aopa Watumohai
Indonesia Semau
Indonesia Tanjung Ngunju
Indonesia Tatar Sepang
Indonesia Todo Repok
Indonesia Tuti Adagae
Indonesia Wakatobi
Indonesia Wolo Tado
Indonesia Yawila
Timor-Leste Fatumasin
Timor-Leste Irabere - Iliomar
Timor-Leste Monte Diatuto
Timor-Leste Monte Mak Fahik - Sarim
Timor-Leste Sungai Klere
Timor-Leste Tilomar

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable non-breeding
Artificial/Terrestrial Plantations suitable resident
Forest Subtropical/Tropical Dry major resident
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Shrubland Subtropical/Tropical Dry suitable resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude 0 - 1000 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals Timing Scope Severity Impact
Ongoing Majority (50-90%) Very Rapid Declines High Impact: 8
Stresses
Species mortality
Biological resource use Hunting & trapping terrestrial animals Timing Scope Severity Impact
Past, Unlikely to Return Minority (<50%) Slow, Significant Declines Past Impact
Stresses
Species mortality
Biological resource use Logging & wood harvesting Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation
Climate change & severe weather Droughts Timing Scope Severity Impact
Past, Likely to Return Minority (<50%) Slow, Significant Declines Past Impact
Stresses
Reduced reproductive success
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Past, Likely to Return Minority (<50%) Slow, Significant Declines Past Impact
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Competition, Reduced reproductive success
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Species mortality
Pollution Agricultural & forestry effluents Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Non-trivial Recent
Food - human - - - Non-trivial Recent
Pets Whole Adults and juveniles Wild Non-trivial Recent
Pets Whole Adults and juveniles Wild International Non-trivial Recent
Pets/display animals, horticulture - - - International Non-trivial Recent

Recommended citation
BirdLife International (2017) Species factsheet: Cacatua sulphurea. Downloaded from http://www.birdlife.org on 18/10/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/10/2017.