• 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.
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
B1ab(ii,iii,iv,v); C2a(i,ii); D	B1ab(ii,iii,iv,v); C2a(i,ii); D	B1ab(ii,iii,iv,v); C2a(i,ii); D1+2

Red List history

Year	Category	Criteria
2019	Critically Endangered	B1ab(ii,iii,iv,v); C2a(i,ii); D
2016	Critically Endangered	B1ab(iii,v); C2a(i,ii); D
2015	Critically Endangered	B1ab(iii,v); C2a(i,ii); D
2012	Critically Endangered	B1ab(iii,v);C2a(i,ii);D
2009	Critically Endangered	B1a+b(iii); C2a(i); D1
2008	Critically Endangered
2007	Critically Endangered
2006	Not Evaluated
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Number of locations	0-18	-
Severely fragmented?	yes	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	0-49 mature individuals	poor	suspected	2019
Population trend	decreasing	poor	estimated	1999-2009
Generation length	3.8 years	-	-	-

Population justification: Playback surveys in lowland forests of Pernambuco and Alagoas states since 2004 have failed to locate this species (S. A. Roda in litt. 2006). Based on analysis of known threats and the lack of records of this species, and following the application of new methods for estimating the probability of a species remaining extant (Akcakaya et al. 2017, Keith et al. 2017, Thompson et al. 2017), the species is now considered to be Possibly Extinct (Butchart et al. 2018). If it remains extant, its population is likely to number fewer than 50 individuals and mature individuals.

Trend justification: If it remains extant, the species is suspected to be declining rapidly owing to the comprehensive loss of habitat within its restricted range (da Silva et al. 2002). An analysis of remotely-sensed land cover data and modelled population densities estimated that the area of habitat within the species's extent of occurrence declined between 1992 and 2015, and that the species's population size underwent a reduction at a rate equivalent 16% across three generations (Santini et al. 2019). However, based on analysis of known threats and the lack of records of this species, and following the application of new methods for estimating the probability of a species remaining extant (Akcakaya et al. 2017, Keith et al. 2017, Thompson et al. 2017), the species is now considered to be Possibly Extinct (Butchart et al. 2018). Therefore, the species may have undergone a population size reduction of 100% over the last three generations, if it was extant at the start of that period.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Brazil	possibly extinct	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 150 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		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Pernambuco Pygmy-owl Glaucidium mooreorum. Downloaded from https://datazone.birdlife.org/species/factsheet/pernambuco-pygmy-owl-glaucidium-mooreorum on 26/11/2024.
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 26/11/2024.