• 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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2020	Near Threatened	B1ab(ii,iii,v)
2016	Near Threatened	B1b(ii)
2013	Near Threatened	B1ab(ii,iii,v);C2a(ii)
2012	Near Threatened	B1ab(ii,iii,v);C2a(ii)
2008	Near Threatened	B1a+b(iii); C2a(i)
2004	Near Threatened
2000	Lower Risk/Near Threatened
1996	Vulnerable
1994	Vulnerable
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	8,200 km2	medium
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	10000-19999 mature individuals	poor	estimated	2012
Population trend	decreasing	-	suspected	-
Generation length	2.83 years	-	-	-

Population justification: Partners in Flight (2019) estimate the population to number <50,000 individuals; however, this is likely an overestimate as the species occurs at a low density (A. Townsend Peterson in litt. 2016). Thus it is here placed in the band for 10,000-19,999 mature individuals.

Trend justification: The population is suspected to be in decline owing to on-going habitat destruction and degradation (del Hoyo et al. 2005). The State of North America's Birds assesses the population trend as steeply declining (NABCI 2016).

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

Country/Territory	IBA Name
Mexico	Cerro de Oro
Mexico	Presa Temascal
Mexico	Sierra de Zongolica-Tenango

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	major	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	75 - 1000 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%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Negligible declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Natural system modifications	Dams & water management/use - Large dams	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: Sumichrast's Wren Hylorchilus sumichrasti. Downloaded from https://datazone.birdlife.org/species/factsheet/sumichrasts-wren-hylorchilus-sumichrasti on 23/11/2024.
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 23/11/2024.