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Cone-billed Tanager Conothraupis mesoleuca

IUCN Red List Criteria

Critically Endangered C2a(ii) 
Endangered B1ab(iii,v); C2a(i,ii); D1 
Vulnerable B1ab(iii,v); C2a(i,ii); D 

IUCN Red List history

Year Category
2013 Critically Endangered
2012 Critically Endangered
2010 Critically Endangered
2009 Critically Endangered
2008 Critically Endangered
2006 Critically Endangered
2004 Critically Endangered
2000 Critically Endangered
1996 Vulnerable
1994 Vulnerable
1988 Threatened

Species attributes

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

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,500 medium
Number of locations 3 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 50-249 poor Estimated 2007
Population trend Decreasing poor -
Number of subpopulations 3 - - -
Largest subpopulation 51-250 - - -
Generation length (yrs) 3.7 - - -
Population justification: The population is assumed to be very small as the species avoided detection for so long. In Emas National Park it is now known from six sightings at four different locations; given that c. 1,500 km2 of suitable habitat exists within Emas, it is unlikely that the population is below 50 individuals. In Alto Rio Juruena, Mato Grosso, the population may number perhaps up to 100 individuals (P. Develey in litt. 2007). Total numbers are precautionarily estimated at 50-249 mature individuals, but further fieldwork may well show that there are more than this. This estimate equates to 75-374 individuals in total, rounded here to 70-400 individuals.
Trend justification: Although very poorly known, outside of the protected areas in which it occurs this species's population is suspected to be decreasing owing to declines in habitat quality. The likely rate of decline, however, has not been estimated.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Brazil Native Extant Yes      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Brazil Alto Rio Juruena site factsheet
Brazil Parque Nacional das Emas site factsheet
Brazil Rio Claro site factsheet
Brazil Tirecatinga / Utiariti site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry major resident
Altitude 0 - 300 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
Future Minority (<50%) Rapid Declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Dams & water management/use / Dams (size unknown) Timing Scope Severity Impact
Future Unknown Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Conothraupis mesoleuca. Downloaded from http://www.birdlife.org on 24/10/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/10/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Critically Endangered
Family Thraupidae (Tanagers)
Species name author (Berlioz, 1939)
Population size 50-249 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 1,500 km2
Country endemic? Yes
Links to further information
- Summary information on this species