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A new population of the Cone-billed Tanager Conothraupis mesoleuca, with information on the biology, behaviour and type locality of the species

  • CARLOS ERNESTO CANDIA-GALLARDO (a1), LUÍS FÁBIO SILVEIRA (a2) and ADRIANA AKEMI KUNIY (a3)
Abstract
Summary

The ‘Critically Endangered’ Cone-billed Tanager Conothraupis mesoleuca was described in 1939, based on a single specimen collected in the state of Mato Grosso, western Brazil. Not seen again in the wild until 2003, this poorly-known species was rediscovered in Emas National Park, in the Brazilian state of Goiás. We describe here the discovery of a new population of Cone-billed Tanager in Chapada dos Parecis, along the upper Juruena River basin, in the state of Mato Grosso. The birds were always detected in (or near) flooded habitats along rivers. At least 40 individuals were found, but the population may be larger, since areas of potential habitat are available in the upper Juruena basin and these have not yet been surveyed. We also provide here the first information on the biology and behaviour of the species based on observations in Juruena and Emas, as well as a first description of the female. Historical documents and our records support our suggestion that “Juruena”, i.e. the type locality of the Cone-billed Tanager, refers to the Juruena telegraph station (12°50’S, 58°55’W). Considering that the range of the species is being settled, research on different aspects of its biology are urgent.

Resumo

O tiê-bicudo Conothraupis mesoleuca, ave considerada criticamente ameaçada, foi descrito em 1939 com base em um único espécime coletado no Mato Grosso. A espécie permaneceu sem novos registros até 2003, quando foi redescoberta no Parque Nacional das Emas, GO. Descrevemos aqui o achado de outra população da espécie na Chapada dos Parecis, ao longo da bacia do alto rio Juruena, MT. Nossos registros foram sempre realizados em (ou próximo de) ambientes ribeirinhos alagados. Encontramos pelo menos 40 indivíduos, mas a população pode ser maior, pois existem áreas de habitat potencial na bacia do alto Juruena que nunca foram visitadas por ornitólogos. Fornecemos aqui as primeiras informações sobre a biologia e comportamento da espécie, baseadas em observações realizadas no Juruena e em Emas, bem como uma descrição da fêmea. Documentos históricos e nossos registros suportam nossa sugestão de que “Juruena”, i.e. a localidade-tipo da espécie, refere-se à Estação Telegráfica de Juruena (12°50’S, 58°55’W). Frente ao avanço da ocupação humana na área de ocorrência desta rara espécie, chamamos a atenção para a necessidade de pesquisas urgentes envolvendo os diferentes aspectos de sua biologia.

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*Author for correspondence; e-mail: candiagallardo@usp.br
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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

T. A Diacon . (2004) Stringing together a nation: Cândido Mariano da Silva Rondon and the construction of modern Brazil, 1906–1930. Durham: Duke University Press.

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Bird Conservation International
  • ISSN: 0959-2709
  • EISSN: 1474-0001
  • URL: /core/journals/bird-conservation-international
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