Glaucidium mooreorum 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Strigiformes Strigidae

Scientific Name: Glaucidium mooreorum Silva, Coelho & Gonzaga, 2002
Common Name(s):
English Pernambuco Pygmy-owl, Pernambuco Pygmy Owl, Pernambuco Pygmy-Owl
Taxonomic Source(s): SACC. 2005 and updates. A classification of the bird species of South America. Available at: #
Identification information: A typical Neotropical pygmy-owl of the Glaucidium minutissimum species complex. It has a light grey-chestnut coloured crown and head speckled with conspicuous white spots on the face and head to the lower nape. Has a white collar and white underparts streaked with rufous. Back is chestnut. Tail dark with white spots. Similar spp. it differs from its geographically closest relatives in its overall lighter colouration, size and voice. Voice a short phrase of 5-7 notes.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii,v); C2a(i,ii); D ver 3.1
Year Published: 2016
Date Assessed: 2016-10-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Contributor(s): Albano, C. & Roda, S.
Facilitator/Compiler(s): Bird, J., Butchart, S., Sharpe, C J, Symes, A. & Ashpole, J
This species is assumed to have a tiny and declining population within an extremely small known range. Surveys have failed to locate it elsewhere, and available habitat continues to decline as a consequence of severe human pressures. As a result it is currently considered Critically Endangered.

Previously published Red List assessments:

Geographic Range [top]

Range Description:Glaucidium mooreorum was described from the Reserva Biológica de Saltinho (which covers just 4.8 km2) in Atlantic coastal forest in Pernambuco, Brazil. It was tape-recorded in the same locality in November 1990. The species was also found in a 100 ha forest patch at Usina Trapiche (08 35'S, 35 07'W) in November 2001. It occupies a tiny and severely fragmented range. Playback surveys in lowland forests elsewhere in Pernambuco and Alagoas states since 2004 have failed to locate this species (S. A. Roda in litt. 2006, 2008), and there are no records from other well-surveyed forest sites in the region. Its population has not been estimated accurately but is assumed to be tiny based on the lack of records outside its tiny range and continuing deforestation within the area.

Countries occurrence:
Additional data:
Continuing decline in area of occupancy (AOO):Unknown
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:100
Continuing decline in extent of occurrence (EOO):UnknownExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:2Continuing decline in number of locations:Unknown
Extreme fluctuations in the number of locations:No
Upper elevation limit (metres):150
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Playback surveys in lowland forests of Pernambuco and Alagoas states since 2004 have failed to locate this species (S. A. Roda in litt. 2006). Pereira et al. (2014) consider the species to be possibly extinct given that in 2014 it had not been recorded for over 12 years despite extensive searches; it is also legally designated as Extinct in Brazil (MMA 2014). Its known distribution is tiny and the extent of habitat in the region has been dramatically reduced, the remainder is severely fragmented. If it remains extant, its population is likely to number fewer than 50 individuals and mature individuals.

Trend Justification:  The species is suspected to be declining rapidly owing to the comprehensive loss of habitat within its restricted range (da Silva et al. 2002).

Current Population Trend:Decreasing
Additional data:
Number of mature individuals:1-49Continuing decline of mature individuals:Yes
Extreme fluctuations:NoPopulation severely fragmented:Yes
No. of subpopulations:2-100Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:It has been recorded in the canopy of old secondary forest where it was observed eating a cicada. An unconfirmed report suggests the species is vocal during the rainy months of April and May (S. A. Roda in litt. 2006, 2008). It has been recorded in forest up to 150 m but has not been found in other well-surveyed forests in the region at elevations between 400 and 600 m.

Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):3.8
Movement patterns:Not a Migrant

Threats [top]

Major Threat(s): The Pernambuco Center where this species was described is by far the most modified region of Atlantic Forest having declined in extent from c. 39,500 km2 to c. 1,900 km2 by 2002. The remainder is severely fragmented and legal restrictions have proven inadequate in halting deforestation from fire and illegal logging. Some suitable habitat does remain at the type locality (S. A. Roda in litt. 2006, 2008). Hunting is also reported to pose a threat to this species.

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
The species occurs in the 4.8 km2 Reserva Biológica de Saltinho. Approximately 240 km2 of the remaining 1,900 km2 of Pernambuco Atlantic Forest are protected within 52 reserves but these almost exclusively support small fragments. Legal restrictions exist to attempt to curb the rate of forest loss.

Conservation Actions Proposed
Protection of remaining lowland forest fragments in the area is urgently needed, along with more effective law enforcement to prevent illegal deforestation. Further surveys are required to locate other populations outside the known range; erecting nest boxes in potentially suitable forest fragments should be considered (C. Albano in litt. 2008) as well as using playback.

Citation: BirdLife International. 2016. Glaucidium mooreorum. The IUCN Red List of Threatened Species 2016: e.T22733081A95053803. . Downloaded on 24 September 2018.
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