• 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., 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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	A3c+4c; D1

Red List history

Year	Category	Criteria
2021	Vulnerable	A3c+4c
2016	Vulnerable	B1ab(i,ii,iii,v);C2a(i)
2012	Vulnerable	B1ab(i,ii,iii,v);C2a(i)
2008	Vulnerable	B1a+b(i,ii,iii,v); C2a(i)
2006	Vulnerable
2004	Vulnerable
2000	Vulnerable
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	119,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	600-1700 mature individuals	poor	suspected	2006
Population trend	decreasing	poor	inferred	2015-2030
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Generation length	5.1 years	-	-	-
Number of subpopulations	3-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The population is suspected to number 1,000-2,499 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 667-1,666 mature individuals, rounded here to 600-1,700 mature individuals (J. V. Remsen in litt. 1986). The species appears to be generally uncommon, but may be overlooked (Snow and Sharpe 2020).

Trend justification: The species is undergoing a decline, which is thought to be caused by the loss, fragmentation and degradation of forests within the range; it is becoming rarer particularly in disturbed areas (Snow and Sharpe 2020). Over the past three generations (15.3 years), about 2% of forest has been lost (Global Forest Watch 2021). Assuming that population declines exceeded the rate of forest loss due to the additional impacts of habitat degradation, the population may have been declining at <10% over the past three generations.
Projecting climate change impacts on the distribution range in Bolivia indicate that the range size may be reduced considerably by the end of the 21^st century, at a rate equating to up to 50% over the next three generations, though this assumes the precautionary scenario of no dispersal taking place (Avalos and Hernández 2015). The population is therefore tentatively suspected to decline at a rate of up to 30-49% over the next three generations.

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

Country/Territory	IBA Name
Bolivia	Yungas Inferiores de Carrasco
Bolivia	Yungas Superiores de Apolobamba
Bolivia	Yungas Superiores de Carrasco
Bolivia	Yungas Superiores de Madidi
Bolivia	Yungas Superiores de Mosetenes y Cocapata
Peru	Maruncunca

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1800 - 2750 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		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: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Rapid Declines		Medium Impact: 6
		Stresses Ecosystem degradation
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Rapid Declines		High Impact: 8
		Stresses Indirect ecosystem effects
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Scimitar-winged Piha Lipaugus uropygialis. Downloaded from https://datazone.birdlife.org/species/factsheet/scimitar-winged-piha-lipaugus-uropygialis 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.