|Scientific Name:||Cettia diphone|
|Species Authority:||(Kittlitz, 1830)|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer(s):||Butchart, S. & Symes, A.|
|Facilitator/Compiler(s):||Ekstrom, J., 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 appears to be stable, and hence the species does not approach the thresholds for Vulnerable 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, Democratic People's Republic of; Korea, Republic of; Philippines; Russian Federation; Taiwan, Province of China
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The global population size has not been quantified, but in its non-breeding range, the species is described as uncommon to locally fairly common. Race restricta is now considered to be extinct. The introduced populations on Hawaii are now considered to be common to abundant on Oahu and spreading to other islands (del Hoyo et al. 2006). National population estimates include: c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in China; < c.50 individuals on migration and < c.50 wintering individuals in Taiwan; c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Korea; c.10,000-100,000 breeding pairs in Japan and c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Russia (Brazil 2009).|
Trend Justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.
|Current Population Trend:||Stable|
|Citation:||BirdLife International. 2012. Cettia diphone. The IUCN Red List of Threatened Species 2012: e.T22714380A39511284.Downloaded on 24 August 2016.|