• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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.

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;B1ab(ii,iii)
2012	Near Threatened	A2c+3c+4c;B1ab(ii,iii)
2008	Near Threatened	A2c; A3c; A4c; B1a+b(ii,iii)
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Near Threatened
1988	Near Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	66,700 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	40000-95000 mature individuals	medium	estimated	2022
Population trend	decreasing	poor	suspected	2016-2030
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)	20-29%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Generation length	4.47 years	-	-	-
Number of subpopulations	2	-	-	-
Percentage of mature individuals in largest subpopulation	95-99%	-	-	-

Population justification: A historic estimate of below 10,000 birds by Juniper and Parr (1998) is almost certainly too low. Walker and Cahill (2000) recorded the species at densities of 7.18 birds/km² and 16.27 birds/km² in the Tangkoko Duasaudara Nature Reserve and Bogani Nani Wartabone National Park in 1996-1998. With approximately 11,300 km² of lowland rainforest in its range, they estimated that the global population size of P. flavicans was 44,650-221,250 birds (using the lower bound of the lowest density recorded, and the higher bound of the greatest density recorded), with a best estimate of c.95,000-170,000 birds, perhaps equivalent to 62,700-112,200 mature individuals. In 2022, the area of suitable (breeding) habitat for this species was c.7,000-9,500 km², depending on the assumptions used on this species' adaptability to degradation. Using these contemporary data, the total population size is revised here to 59,000-143,000 birds, or c.40,000-95,000 mature individuals.

Trend justification: This species is suspected to be declining relatively moderately because of ongoing forest loss within its range. This species favours lowland forest below 1,000 m, which is the most rapidly disappearing on Sulawesi. In the three generations (13.4 years; Bird et al. 2020) to 2022, forest cover extent in the range of P. flavicans reduced by c.15-17%, depending on the assumptions used (Global Forest Watch 2022, based on data from Hansen et al. [2013] and methods disclosed therein). This does not account for habitat degradation, which is rampant in northern Sulawesi and, to a lesser extent, on the Togian islands (Voigt et al. 2021, Global Forest Watch 2022). Although the species visits higher elevations and degraded habitats, it is thought to do so only to feed, and relies on lowland forest with nesting hollows to breed. Evaluating the scant data available, over the past three generations the species is therefore suspected to have declined by 15-25%. In the future three generations, this may accelerate (see Voigt et al. 2021), and the rate is placed in the band 20-29%.

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

Country/Territory	IBA Name
Indonesia	Bogani Nani Wartabone
Indonesia	Kepulauan Togean
Indonesia	Likupang
Indonesia	Mahawu - Masarang
Indonesia	Popayato - Paguat
Indonesia	Tangkoko Dua Sudara

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 1000 m	Occasional altitudinal limits	(max) 1900 m

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	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		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		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
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Yellowish-breasted Racquet-tail Prioniturus flavicans. Downloaded from https://datazone.birdlife.org/species/factsheet/yellowish-breasted-racquet-tail-prioniturus-flavicans on 18/12/2024.
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 18/12/2024.