NT
Pied Cuckooshrike Coracina bicolor



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and 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
2023 Near Threatened A2c+3c+4c
2016 Near Threatened A2c+3c+4c
2012 Near Threatened A2c+3c+4c
2008 Near Threatened A2c; A3c; A4c
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 448,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing poor inferred 2015-2028
Rate of change over the past 10 years/3 generations (longer of the two periods) 15-25% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 15-25% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 15-25% - - -
Generation length 4.2 years - - -

Population justification: The global population size of this species has not been quantified, but c.75,000 km2 of forest remains in its range (per Global Forest Watch 2022). Even accounting for descriptions of its abundance as local or rare (del Hoyo et al. 2005, Eaton et al. 2021), the population size is therefore unlikely to be especially small, even if only a portion of forest in its range is occupied.

Trend justification: This species is dependent on lowland, good-quality forest (Eaton et al. 2021, J. Eaton in litt. 2022). In the three generations (12.6 years; Bird et al. 2020) to 2021, forest extent (of >50% cover) was reduced in this species' range by 14-16% (Global Forest Watch 2022, based on data from Hansen et al. [2013] and methods disclosed therein). These data do not account for habitat degradation, nor for the fact that this species most likely occurs at higher densities at the lowest elevations of good forest. Consequently, the rate of forest cover loss is thought to represent the minimum possible rate of population reduction. In the past three generations, it is therefore suspected of having declined by 15-25%. There is little indication this rate will slow in the future, with rates of forest cover loss between 2016 and 2021 showing a moderate acceleration, and projections by Voigt et al. (2021) indicating that forests favoured by this species are most at risk. The same rate of population reduction is therefore suspected to occur over the next three generations.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Indonesia Bogani Nani Wartabone
Indonesia Buton Utara
Indonesia Feruhumpenai - Matano
Indonesia Gunung Sahendaruman
Indonesia Kepulauan Togean
Indonesia Lambusango
Indonesia Likupang
Indonesia Mahawu - Masarang
Indonesia Mekongga
Indonesia Rawa Aopa Watumohai
Indonesia Tangkoko Dua Sudara

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude 0 - 700 m Occasional altitudinal limits (max) 900 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
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations - Small-holder plantations Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2024) Species factsheet: Pied Cuckooshrike Coracina bicolor. Downloaded from https://datazone.birdlife.org/species/factsheet/pied-cuckooshrike-coracina-bicolor on 22/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 22/11/2024.