LC
Chinese Sparrowhawk Accipiter soloensis



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2021 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Low
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 4,070,000
Extent of Occurrence non-breeding (km2) 9,240,000
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 268000-667000 poor estimated 2010
Population trend Decreasing inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 11-20 - - -
Decline (10 years/3 generation past and future) 11-20 - - -
Number of subpopulations 1 - - -
Percentage in largest subpopulation 100 - - -
Generation length (yrs) 4.72 - - -

Population justification: In Taiwan, China, weather radar has been used to estimate the numbers of the species passing over during spring migration. A maximum of 409,000 individuals were estimated in 2004 (Chen et al. 2004) with at least 225,935 individuals over in just 5 April days (Sun et al. 2010). Germi et al. (2009) estimated that at least 350,000 Chinese Sparrowhawk migrate to eastern Indonesia, counting 225,067 between 20 September and 30 November 2007. These totals represent the best estimates of the total population size, which is therefore estimated at between 400,000-1,000,000 individuals. Assuming that two-thirds are mature, this represents 268,000-667,000 mature individuals.

Trend justification: In South Korea, Kim et al. (2021) find that modelled occupancy based on robust survey has reduced by 11% (95% confidence interval -1 to -20%) between 1997-2005 and 2013-2017. In the absence of further trend estimates, this rate is suspected to apply to the population overall. Using the mid-point of the survey periods, the equivalent three-generation population reduction (assuming an exponential decline) is 11.2% (1-21%).  The population size is suspected to reduce at a faster rate than the occupancy, which only reduces when the last pair is lost from a surveyed unit. The best estimate of occupancy loss is set as the minimum suspected rate of population reduction, with the upper 95% confidence interval set as the upper suspected rate of reduction. Hence the past population reduction is suspected to have been 11-20% over the past three generations, and this rate is suspected to continue in the absence of .


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Brunei N Extant Yes
Cambodia N Extant Yes
China (mainland) N Extant Yes Yes Yes Yes
Guam (to USA) N Extant Yes
Hong Kong (China) N Extant Yes
Indonesia N Extant Yes
Japan N Extant Yes
Laos N Extant Yes
Malaysia N Extant Yes Yes
Micronesia, Federated States of N Extant Yes
Myanmar N Extant Yes
North Korea N Extant Yes
Northern Mariana Islands (to USA) N Extant Yes
Palau N Extant Yes
Papua New Guinea V Extant Yes
Philippines N Extant Yes
Russia N Extant Yes
Russia (Asian) N Extant Yes
Singapore N Extant Yes
South Korea N Extant Yes Yes
Taiwan, China N Extant Yes Yes
Thailand N Extant Yes
Timor-Leste N Extant Yes Yes
Vietnam N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Indonesia Telaga Warna-Cibulao
Indonesia Bali Barat
Taiwan, China Kenting National Park
Malaysia Tanjung Tuan
Malaysia Bintang Range

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Artificial/Aquatic - Seasonally Flooded Agricultural Land suitable resident
Artificial/Terrestrial Plantations suitable breeding
Artificial/Terrestrial Rural Gardens suitable resident
Forest Subtropical/Tropical Dry suitable non-breeding
Forest Subtropical/Tropical Moist Lowland suitable non-breeding
Forest Temperate suitable breeding
Shrubland Temperate suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable resident
Altitude 0 - 1500 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Shifting agriculture Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species disturbance, Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Commercial & industrial areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem conversion
Transportation & service corridors Flight paths Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species mortality

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Accipiter soloensis. Downloaded from http://www.birdlife.org on 19/01/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 19/01/2022.