• 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
-	-	B1ab(i,ii,iii,iv)

Red List history

Year	Category	Criteria
2020	Vulnerable	B1ab(i,ii,iii,iv)
2016	Endangered	B1ab(i,ii,iii,iv,v)
2012	Endangered	B1ab(i,ii,iii,iv,v)
2008	Endangered	B1a+b(i,ii,iii,iv,v)
2004	Endangered
2000	Endangered
1996	Vulnerable
1994	Vulnerable
1988	Threatened

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type	continent	Average mass	11 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	16,000 km2	medium
Number of locations	5	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1500-7000 mature individuals	poor	inferred	2000
Population trend	decreasing	poor	suspected	-
Generation length	2.44 years	-	-	-
Number of subpopulations	2-100	-	-	-

Population justification: The population is estimated to number 2,500-9,999 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 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.

Trend justification: There are no data on population trends; however, the species is suspected to be declining rapidly owing to wetland drainage.

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

Country/Territory	IBA Name
Mexico	Ciénegas del Lerma
Mexico	Laguna de Yuriria
Mexico	Pátzcuaro
Mexico	Sierra de Taxco - Nevado de Toluca

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	major	resident
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	major	resident
Altitude	1700 - 2800 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Scale Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Very Rapid Declines		High Impact: 8
		Stresses Ecosystem degradation, Ecosystem conversion
Natural system modifications	Dams & water management/use - Abstraction of surface water (domestic use)	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Very Rapid Declines		High Impact: 8
		Stresses Ecosystem degradation, Ecosystem conversion
Residential & commercial development	Commercial & industrial areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Very Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Black-polled Yellowthroat Geothlypis speciosa. Downloaded from https://datazone.birdlife.org/species/factsheet/black-polled-yellowthroat-geothlypis-speciosa on 23/12/2024.
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 23/12/2024.