Home ranges and aspects of the natural history of the Black-masked Finch Coryphaspiza melanotis (Gray, 1840) (Aves, Thraupidae) in central Cerrado, Brazil

Autor(es)

Fujikawa, Aline ^[1] ; Tubelis, Darius Pukenis ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Ecol, Cidade Univ, Sao Paulo - Brazil

^[2] Univ Fed Rural Semi Arido, Dept Biociencias, Mossoro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Natural History; v. 53, n. 39-40, p. 2379-2395, OCT 26 2019.
• Citações Web of Science: 0

Resumo

In the Cerrado, native grasslands have been dramatically lost, leading to an alarming decline in populations of bird species that require these vegetation physiognomies. Species such as the Black-masked Finch Coryphaspiza melanotis (Gray, 1840) are vulnerable to extinction and remain poorly studied. The objective of this study was to examine home ranges of the Black-masked Finch at the Parque Nacional da Chapada dos Veadeiros, central Brazil. Ten males were studied in a patch of shrubby grassland (campo sujo) between February and December 2008. The mean sizes of home ranges were 4.47 +/- 1.49 ha (Minimum Convex Polygon) and 3.48 +/- 1.44 ha (Kernel 95%), and this varied significantly between seasons. Home ranges were significantly larger in the non-breeding dry season than during other periods, and significantly smaller in the breeding season than during other periods. Core areas (Kernel 50%) had a mean of 0.46 +/- 0.26 ha. A large overlap of home ranges was observed. The home ranges of all banded males overlapped those of at least three co-specifics, and most had an area overlap of more than 50%. A nest containing an egg and a nestling was found in November. Small and largely overlapped home ranges can be considered as positive for the conservation of the Black-masked Finch. This is because both small grassland fragments and conservation units can substantially contribute to the conservation of its populations through the Cerrado extension. (AU)

• Processo FAPESP: 05/00773-3 - Paisagens agrícolas e a conservação de espécies de aves no cerrado
• Beneficiário: Darius Pukenis Tubelis
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores