|Scientific Name:||Zosterops japonicus Temminck & Schlegel, 1845|
|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.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer(s):||Butchart, S. & Symes, A.|
|Facilitator/Compiler(s):||Ekstrom, J., Harding, M., Butchart, S.|
This species has an extremely large range, and hence does not 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.
|Previously published Red List assessments:|
Native:China; Japan; Korea, Republic of; Lao People's Democratic Republic; Myanmar; Taiwan, Province of China; Thailand; Viet Nam
Vagrant:India; Pakistan; Philippines; Russian Federation (Eastern Asian Russia); Sri Lanka
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The global population size has not been quantified, but the species is described as common (Shimba 2007), while national population estimates include: c.10,000-100,000 breeding pairs in China; c.100,000-1 million breeding pairs in Taiwan; c.100-10,000 breeding pairs and c.50-1,000 individuals on migration in Korea; c.10,000-100,000 breeding pairs in Japan and possibly c.100-10,000 breeding pairs in Russia (Brazil 2009).|
Trend Justification: The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes.
|Current Population Trend:||Unknown|
|Citation:||BirdLife International. 2016. Zosterops japonicus. The IUCN Red List of Threatened Species 2016: e.T22714033A94398594.Downloaded on 23 April 2018.|
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