Cone-billed Tanager Conothraupis mesoleuca
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Family: Thraupidae (Tanagers)

Authority: (Berlioz, 1939)

Red List Category

Criteria: C2a(ii)

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Justification of Red List category
This species went undetected from 1938 to 2003, but was then rediscovered in gallery forest in Emas National Park, and has since also been found at several sites along the Alto Rio Juruena, and at Itiquira. Although the species's status remains very poorly known, it is likely to have a very small range, and an extremely small population, both of which are likely to be declining owing to habitat degradation. For these reasons this species is treated as Critically Endangered. Now its requirements are better understood, further searches may reveal that it is more widespread and common than was previously thought, in which case it may warrant downlisting in the future. Conversely, if the Alto Rio Juruena is confirmed as the global stronghold, planned hydroelectric developments could pose a massive threat to the continued survival of the species.

Population size: 50-249

Population trend: Decreasing

Extent of occurrence (breeding/resident): 117,000 km2

Country endemic: Yes

Land-mass type - continent
Realm - Neotropical
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2017) Species factsheet: Conothraupis mesoleuca. Downloaded from on 22/10/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from on 22/10/2017.