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Description |
Geographic Range [top]
Countries occurrence:
Native:
Cambodia; China; Hong Kong; India; Indonesia; Japan; Korea, Democratic Peoples Republic of; Korea, Republic of; Lao Peoples Democratic Republic; Malaysia; Mongolia; Myanmar; Russian Federation; Singapore; Taiwan, Province of China; Thailand; Viet Nam
Vagrant:
Christmas Island; Norway; Sri Lanka
Present - origin uncertain:
Pakistan
Additional data:
? Continuing decline in area of occupancy (AOO): Unknown
? Extreme fluctuations in area of occupancy (AOO): No ? Estimated extent of occurrence (EOO) - km2: 2710000
? Continuing decline in extent of occurrence (EOO): Unknown ? Extreme fluctuations in extent of occurrence (EOO): No
? Continuing decline in number of locations: Unknown
? Extreme fluctuations in the number of locations: No
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: The global population size has not been quantified, but the species is reported to be reasonably common (Feare et al. 1998), while national population estimates include: c.100-100,000 breeding pairs and c.50-10,000 individuals on migration in China; < c.1,000 individuals on migration in Japan and c.100-100,000 breeding pairs and c.50-10,000 individuals on migration 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
Additional data:
? Number of mature individuals: Unknown ? Continuing decline of mature individuals: Unknown
? Extreme fluctuations: No ? Population severely fragmented: No
? Continuing decline in subpopulations: Unknown
? Extreme fluctuations in subpopulations: No ? All individuals in one subpopulation: No
Habitat and Ecology [top]
Citation: BirdLife International. 2016. Agropsar sturninus. The IUCN Red List of Threatened Species 2016: e.T22710870A94264888. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22710870A94264888.en. Downloaded on 29 June 2017.
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