• 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
2019	Near Threatened	A2bc; B1b(ii,iii,iv,v)+2b(ii,iii,iv,v)
2016	Near Threatened	B1ab(ii,iii,iv,v)
2015	Near Threatened	B1ab(ii,iii,iv,v)
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	27,800 km2	medium
Area of Occupancy (breeding/resident)	500 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	20000-49999 mature individuals	poor	estimated	2017
Population trend	decreasing	-	estimated	-
Rate of change over the past 10 years/3 generations (longer of the two periods)	6-23%	-	-	-
Generation length	3.8 years	-	-	-

Population justification: Partners in Flight estimated the population to number fewer than 50,000 mature individuals (A. Panjabi in litt. 2017), thus it is placed in the band 20,000-49,999 mature individuals here.

Trend justification: Habitat loss through logging is known to occur within the species's range (König and Weick 2008); a remote sensing study found that forest was lost at a rate of 2% over three generations (11.4 years) between 2000 and 2012 within the species's range (Tracewski et al. 2016). Partners in Flight report a small or non-significant population decline since the 1970s (A. Panjabi in litt. 2017). Pronatura (2012) estimates that the population has declined by 15-49% in 30 years, which equates to a decline of 6-23% over three generations. Further research is needed to confirm the magnitude of the declines.

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

Country/Territory	IBA Name
Mexico	Tlanchinol y Bosques de Montaña del Noreste de Hidalgo

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	900 - 2100 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
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

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Recommended citation
BirdLife International (2024) Species factsheet: Tamaulipas Pygmy-owl Glaucidium sanchezi. Downloaded from https://datazone.birdlife.org/species/factsheet/tamaulipas-pygmy-owl-glaucidium-sanchezi 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.