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Description |
Geographic Range [top]
Countries occurrence:
Native:
Bangladesh; Brunei Darussalam; Cambodia; China; Cocos (Keeling) Islands; Hong Kong; Indonesia; Japan; Korea, Democratic Peoples Republic of; Lao Peoples Democratic Republic; Malaysia; Mongolia; Myanmar; Philippines; Russian Federation; Singapore; Taiwan, Province of China; Thailand; Viet Nam
Vagrant:
Iran, Islamic Republic of; Northern Mariana Islands
Continuing decline in area of occupancy (AOO): Unknown
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 3660000
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
Upper elevation limit (metres): 2000
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: Ferguson-Lees and Christie (2001) estimate the population at 20,000-30,000 pairs which equates to 40,000 to 60,000 mature individuals. The species is described as generally rare in Russia and uncommon in northern Japan (del Hoyo et al. 1992).
Trend Justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.
Current Population Trend: Stable
Additional data:
?Number of mature individuals: 40000-60000 ?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]
Threats [top]
Major Threat(s): Degradation of wetland habitat across the speciess range (Orta et al. 2014). In Japan, lead shot in prey items has been identified as a potential threat (Hirano et al. 2004); this threat could be more widespread across the speciess range.
Citation: BirdLife International. 2015. Circus spilonotus. The IUCN Red List of Threatened Species 2015: e.T61709141A80003374. http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T61709141A80003374.en. Downloaded on 01 April 2016.
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