email a friend
printable version
LC
Micronesian Myzomela Myzomela rubratra

Justification
Although this species may have a restricted range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

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

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).

References
del Hoyo, J.; Elliott, A.; Christie, D. 2008. Handbook of the Birds of the World, vol. 13: Penduline-tits to Shrikes. Lynx Edicions, Barcelona, Spain.

Text account compilers
Ekstrom, J., Butchart, S.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2014) Species factsheet: Myzomela rubratra. Downloaded from http://www.birdlife.org on 11/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 11/07/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Meliphagidae (Honeyeaters)
Species name author (Lesson, 1827)
Population size Unknown mature individuals
Population trend Unknown
Distribution size (breeding/resident) 1,600 km2
Country endemic? No
Links to further information
- Additional Information on this species