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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.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
16 cm. Black-and-white tanager. Male is mostly black. White lower breast and belly, except for black sides of belly and crissum. Small, white bases to primaries. Stout, pointed all white bill (Buzzetti in litt. 2007). Female: Olive brown upperparts, paler olive brown breast, whitish-buffy lower breast and belly. Dull olive bill (Buzzetti in litt. 2007). Similar spp. Similar in appearance to the allopatric Black-and-white tanager C. speculigera, but otherwise well distinct. Voice: The song consists of two groups of rapid musical notes, the second group slightly lower pitched, followed by a trill. This song may be repeated continuously and sounds like "tchi, tchi, tchi, tchi, tchi, tchirrrrrrrrrrr, tzarrrrrrrrrrr, zíiiiiiiiiiiiiii" (Buzzetti in litt. 2007).
Related state of the world's birds case studies
Buzzetti, D.; Carlos, B. A. 2005. A redescoberta do tiÃª-bicundo (Conothraupis mesoleuca) (Berlioz, 1939). Atualidades OrnitolÃ³gicas 127: 4-5.
Candia-Gallardo, C. E.; Silveira, L. F.; Kuniy, A. A. 2010. A new population of the Cone-billed Tanager Conothraupis mesoleuca, with information on the biology, behaviour and type locality of the species. Bird Conservation International 20(2): 149-160.
Collar, N. J.; Gonzaga, L. P.; Krabbe, N.; MadroÃ±o Nieto, A.; Naranjo, L. G.; Parker, T. A.; Wege, D. C. 1992. Threatened birds of the Americas: the ICBP/IUCN Red Data Book. International Council for Bird Preservation, Cambridge, U.K.
WikiAves. 2013. TiÃª-bicudo. Available at: http://www.wikiaves.com.br/tie-bicudo. (Accessed: 01/10/2013).
Further web sources of information
Detailed species account from the Threatened birds of the Americas: the BirdLife International Red Data Book (BirdLife International 1992). Please note taxonomic treatment and IUCN Red List category may have changed since publication.
Detailed species account from the Threatened birds of the Americas: the BirdLife International Red Data Book (BirdLife International 1992). Please note, taxonomic treatment and IUCN Red List category may have changed since publication.
Recuento detallado de la especie tomado del libro Aves Amenazadas de las Americas, Libro Rojo de BirdLife International (BirdLife International 1992). Nota: la taxonomoía y la categoría de la Lista Roja de la UICN pudo haber cambiado desde esta publicación.
Text account compilers
Bird, J., Butchart, S., Capper, D., Pople, R., Sharpe, C J, Symes, A., Taylor, J. & Temple, H.
Buzzetti, D., Develey, P., Hennessey, A., Whitney, B., Carlos, B. & Candia-Gallardo, C.
BirdLife International (2016) Species factsheet: Conothraupis mesoleuca. Downloaded from http://www.birdlife.org on 24/07/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/07/2016.
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.
Additional resources for this species
|Current IUCN Red List category||Critically Endangered|
|Species name author||(Berlioz, 1939)|
|Population size||50-249 mature individuals|
|Distribution size (breeding/resident)||1,500 km2|
|Links to further information|
|- Additional Information on this species|