Dwarf Sparrowhawk Accipiter nanus


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
2022 Least Concern
2016 Near Threatened C1+2a(i)
2012 Near Threatened C1+2a(i)
2008 Near Threatened C1
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency high
Land-mass type Average mass -

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 254,000 medium
Severely fragmented? no -
Population and trend
Value Data quality Derivation Year of estimate
Number of mature individuals unknown not applicable not applicable 0
Population trend stable poor suspected -
Generation length (years) 5.3 - - -

Population justification: The global population size has not been quantified, but the species is described as uncommon to rare (Eaton et al. 2021). However, an accurate assessment on the status of this species is hampered by its identification, particularly due to confusion with A. rhodogaster, but occasionally A. trinotata and Lophospiza griseiceps. Much of its range is also poorly known.

Trend justification: Given this species's occurrence in montane forests, encroachment by agriculture and timber extraction has been minimal in its range. Global Forest Watch (2021) data, using Hansen et al. (2013) methods and data disclosed therein, suggest that forest loss in its range has been minimal (0.2% per annum) and is not necessarily above the rate of natural flux. The population is therefore suspected to be stable, but may decline if forest loss begins to encroach on higher elevation forest.

Country/territory distribution
Country/Territory Presence Origin Resident Breeding Non-breeding Passage
Indonesia extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Indonesia Gunung Simbalang
Indonesia Tangkoko Dua Sudara
Indonesia Mahawu - Masarang
Indonesia Bogani Nani Wartabone
Indonesia Lore Lindu
Indonesia Mekongga
Indonesia Rawa Aopa Watumohai
Indonesia Buton Utara
Indonesia Pegunungan Latimojong
Indonesia Lambusango

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Altitude 900 - 2200 m Occasional altitudinal limits (min) 550 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Shifting agriculture Timing Scope Severity Impact
Future Minority (<50%) Unknown Unknown
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Future Minority (<50%) Unknown Unknown
Ecosystem degradation
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2023) Species factsheet: Accipiter nanus. Downloaded from on 29/09/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 29/09/2023.