CR
Golden White-eye Cleptornis marchei



Taxonomy

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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
A3ce+4ce A3ce+4ce; B1ab(iii,v) A3ce+4ce; B1ab(iii,v); D2

Red List history
Year Category Criteria
2018 Critically Endangered A3ce+4ce
2016 Critically Endangered A3ce+4ce
2015 Critically Endangered A3e+4e
2012 Critically Endangered A3e+4e
2010 Critically Endangered A3e
2009 Critically Endangered A3e
2008 Critically Endangered
2004 Critically Endangered
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass 20 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 400 medium
Number of locations 2 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 50000-99999 good estimated 2007
Population trend Decreasing poor inferred -
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) 75-80 - - -
Number of subpopulations 3 - - -
Largest subpopulations 1-89 - - -
Generation length (yrs) 4.4 - - -

Population justification:

The species occurs on Saipan (71,997 individuals) and Aguiguan (15,499 individuals) (Camp et al. 2009, Amidon et al. 2014), equating to a global population of c. 87,000 individuals. A third population was established on the uninhabited island of Sarigan through translocations of 24 and 50 individuals in 2011 and 2012, respectively (Radley 2012).

Trend justification: An extremely rapid population decline, which may well have already begun, is projected over the next ten years owing to the possible establishment of the Brown Tree Snake (Boiga irregularis) on Saipan.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Northern Mariana Islands (to USA) N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Northern Mariana Islands (to USA) Aguiguan Island and Naftan Rock
Northern Mariana Islands (to USA) Northern Saipan
Northern Mariana Islands (to USA) Topachau-Susupe-Kagman

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Urban Areas suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude   Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Past, Likely to Return Majority (50-90%) No decline Past Impact
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Boiga irregularis Timing Scope Severity Impact
Future Majority (50-90%) Very Rapid Declines Medium Impact: 6
Stresses
Species mortality
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2020) Species factsheet: Cleptornis marchei. Downloaded from http://www.birdlife.org on 28/11/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/11/2020.