CR (PE)
Pernambuco Pygmy-owl Glaucidium mooreorum



Taxonomy

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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
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
Species attributes

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

Estimate Data quality
Number of locations 0-18 -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 0-49 poor suspected 2019
Population trend Decreasing poor estimated -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 3.8 - - -

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 distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Brazil N Possibly Extinct Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Brazil Guadalupe

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 150 m Occasional altitudinal limits  

Threats & impact
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

Recommended citation
BirdLife International (2021) Species factsheet: Glaucidium mooreorum. Downloaded from http://www.birdlife.org on 23/04/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/04/2021.