LC
Micronesian Myzomela Myzomela rubratra



Taxonomy

Taxonomic note

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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Low
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,520,000
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals medium estimated 0
Population trend Unknown not applicable -
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 - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 6 - - -

Population justification: The population of subspecies asuncionis is estimated to number 1,821 individuals on Sarigan alone, as well as occurring through the rest of the northern and central Northern Mariana Islands (to U.S.A.); subspecies saffordi has an estimated total population size of 63,120 individuals; subspecies kobayashii had an estimated total population size of 59,690 in 1991; subspecies kurodai is common, with a total population estimated to number 109,360 individuals; subspecies major has a total population estimated to number 165,440 individuals; subspecies dichromata has an estimated total population size of 358,070, and the nominate subspecies rubrata has a total population estimated to number 136,360 individuals. In total then the total population is estimated to number 850,000-900,000 individuals (the sum of individual estimates being 893,861).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Guam (to USA) N Extinct Yes
Micronesia, Federated States of N Extant Yes
Northern Mariana Islands (to USA) N Extant Yes
Palau N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Palau Middle Ridge, Babeldaob
Palau Western Ridge, Babeldaob
Palau Ngerutechei, Babeldaob
Palau Rock Islands
Palau Peleliu
Northern Mariana Islands (to USA) Rota
Northern Mariana Islands (to USA) Aguiguan Island and Naftan Rock
Northern Mariana Islands (to USA) Tinian Island
Northern Mariana Islands (to USA) Northern Saipan
Northern Mariana Islands (to USA) Topachau-Susupe-Kagman
Northern Mariana Islands (to USA) Maug Islands
Northern Mariana Islands (to USA) Asuncion Island
Northern Mariana Islands (to USA) Alamagan Island
Northern Mariana Islands (to USA) Guguan Island
Northern Mariana Islands (to USA) Sarigan Island
Micronesia, Federated States of Pohnpei Watershed Forest Reserve
Micronesia, Federated States of Enipein Watershed
Micronesia, Federated States of Southeast Pohnpei / Nan Madol
Micronesia, Federated States of Pilapen Kepin River Watershed
Micronesia, Federated States of Salapwuk
Micronesia, Federated States of Wiya Swiftlet Cave
Micronesia, Federated States of Yela River Watershed
Micronesia, Federated States of Utwa-Walung Conservation Area
Micronesia, Federated States of Mount Winipot / Tol South
Micronesia, Federated States of Polle Island
Micronesia, Federated States of Pata Island
Micronesia, Federated States of Onei Island
Micronesia, Federated States of Uman Island
Micronesia, Federated States of South Weno Ridge
Micronesia, Federated States of Yap Island

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Rural Gardens suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Artificial/Terrestrial Urban Areas suitable resident
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 800 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2022) Species factsheet: Myzomela rubratra. Downloaded from http://www.birdlife.org on 16/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/08/2022.