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Brazilian Journal of Biology

versão impressa ISSN 1519-6984versão On-line ISSN 1678-4375

Resumo

PEREIRA, G. A.; LARRAZABAL, M. E.  e  AZEVEDO-JUNIOR, S. M.. Seasonality, biology and threats to Sicalis luteola (Sparrman, 1789) (Aves, Thraupidae) in northeastern Brazil. Braz. J. Biol. [online]. 2017, vol.77, n.2, pp.240-243.  Epub 29-Ago-2016. ISSN 1519-6984.  http://dx.doi.org/10.1590/1519-6984.09215.

Sicalis luteola occurs from Mexico to South America. In the Northeastern Brazilian region its biology, population dynamics and threats are poorly known. The subspecies S. luteola luteiventris apparently migrates northward during austral winter. The specific aims of this work were: 1) to verify the seasonality of the species; 2) to analyze information on molting and breeding, and 3) to check the main threats to this bird in northeastern Brazil. The highest number of records were in March, April, and May (51.12%) and the lowest in November and December (3%).We found a greater population peak in April in the states of Rio Grande do Norte and Ceará, and in April and May in Pernambuco. In Paraíba there was not an apparent seasonal variation in frequency. We captured 66 individuals, all adults, being 38 males and 28 females. 30% of the captured birds showed contour feathers molt, mainly on the head. A total of 23 individuals had brood patch, all being females. Six nests were found and four contained two to three eggs. We found that the main threat is the illegal trade. Our findings may support conservation plans for this bird in the region.

Palavras-chave : Brazil; Caatinga; conservation; illegal trade.

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