NT
Ceara Gnateater Conopophaga cearae



Taxonomy

Taxonomic note

Conopophaga lineata and C. cearae (del Hoyo and Collar 2016) were previously lumped as C. lineata following SACC (2005 and updates) and Sibley and Monroe (1990, 1993).

 

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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- C2a(i) C2a(i)

Red List history
Year Category Criteria
2021 Near Threatened C2a(i)
2016 Least Concern
2012 Not Recognised
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass 21 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 449,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 1500-7400, 3200 poor suspected 2021
Population trend Decreasing inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 1-10 - - -
Decline (10 years/3 generation past and future) 1-10 - - -
Number of subpopulations 3-20 - - -
Percentage in largest subpopulation 1-89 - - -

Population justification: The species is considered common at a few sites, but generally rare at most sites (Greeney 2018). It is quite common throughout the Serra de Baturité (Albano and Girão 2008, B. Whitney in litt., in Greeney 2018). In Alagoas, the species was found in only three (20%) of 15 surveyed forest fragments (Silveira et al. 2003).

No direct estimates of the population size or density are available. Based on the first quartile and median population densities of congeners (2.4 and 3.7 individuals per km2, respectively, based on density estimates for C. aurita and C. peruviana; Thiollay 1986, Terborgh et al. 1990), the estimated area of tree cover with at least 50% canopy cover within the species's mapped range in 2020 (c.9,900 km2; Global Forest Watch 2021), and assuming the tree cover to be 10-30% occupied, the population size is here tentatively suspected to fall within the range 2,400 - 11,000 individuals, roughly equating to 1,500 - 7,400 mature individuals, with a best estimate placed at 3,200 mature individuals (based on the first quartile density and 20% occupancy).

The subpopulation structure is not known, but based on its distribution, the species is assumed to have between three and 20 subpopulations. The size of the largest subpopulation is not known, but may be very small, and is here tentatively suspected to fall within the band 200 - 3,900 mature individuals, with the minimum based on the estimated area of tree cover on the Serra de Baturité, the first quartile density of a congener and assuming 50% habitat occupancy, and the maximum based on the estimated tree cover within the mapped range in the Chapada Diamantina region, the median density of a congener and assuming 30% habitat occupancy.

Trend justification: There have been no recent records at forest fragments where the species was previously recorded in Ceará, Paraíba, Pernambuco and Alagoas, suggesting local extinctions (D. Mendes Lima in litt. 2021). Remote-sensing data on tree cover loss indicates that approximately 4% of tree cover with at least 50% canopy cover was lost from within the species's mapped range over the past decade from 2010-2020 (Global Forest Watch 2021). This species tolerates some forest degradation and also occurs in restinga scrub, which may not be included in the forest loss data. However, the species generally occurs close to intact habitat, so it is precautionarily inferred that the species's population size is declining. The rate of decline may be exacerbated by habitat degradation. The species is suspected to be declining slowly at a rate of up to 10% over ten years.


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

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

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Shrubland Subtropical/Tropical Moist major resident
Altitude 300 - 2000 m Occasional altitudinal limits 0 - 2300 m

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 Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2022) Species factsheet: Conopophaga cearae. Downloaded from http://www.birdlife.org on 16/05/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/05/2022.