Experiência de repovoamento com Sicalis flaveola brasiliensis (Gmelin, 1789) (Passeriformes, Emberizidae) em área destinada à pecuária leiteira

Experiments made with Sicalis flaveola brasiliensis are related. Specimens both bred in captivity and recently captured were realeased to recolonize the farm Jatibaia, at Campinas, state of São Paulo, Brazil.Relatam-se experiências feitas com exemplares de Sicalis flaveola brasiliensis, reintroduzidos, a partir de aves criadas em cativeiro e também recentemente capturadas, para repovoar a fazenda Jatibaia, em Campinas, Estado de São Paulo.19320

Comportamento reprodutivo de Volatinia jacarina jacarina (Linnaeus, 1766) em cativeiro (Passeres, Emberizidae)

Sixpairs of Volatina jacarina have been studied under captivity condition. Territorial defense was displayed by male as well as by female, through agonistic displays joined to characteristic vocalization. Several vocalizations have been identified and described. Courtship behaviour have also been observed. Male and female contributed both to the building of the nest, which is of the cup type, but the male alone was responsible for the chosen place. The average number of eggs by clutch was 2.3 (n = 2.8). Incubation have been depending on the sole female and the average incubation period was 10.6 days (n = 10). Both male and female fed the young with small arthropods and seeds. Nestlings remained in the nest for nine days (n = 9). A gular sac was present in the adults while they fed their young. Independence of the young was adquired in about one month. An internuptial plumage appeared during the non-reproductive period.31933

Divisão de trabalho em cuidados à prole em Sicalis flaveola (Linnaeus, 1766) (Passeriformes, Emberizidae), em cativeiro

Observations relating to the division of labour for young care in Sicalis flaveola brasiliensis (Gmelin) and S. f. pelzelni (Sclater), in captivity, are presented.São relatadas observações relativas à divisão de trabalho em cuidados à prole em Sicalis flaveola brasiliensis (Gmelin) e S. f. pelzelni (Sclater), em condições de cativeiro.20120

Avian foraging behavior on Miconia rubiginosa (Melastomataceae) in Cerrado fragment, São Paulo

Birds of 11 species were observed feeding on fruits of Miconia rubiginosa (Bonpl.)DL between February and March 1985 in Itirapina cerrado, State of São Paulo, Brazil. The feeding strategies of birds with regards to fruit use, and the role of the fruits as food resources for the birds in cerrado are analyzed.9710

Relação do comprimento dos dias com a atividade reprodutiva em Sicalis flaveola (Linnaeus, 1766) (Passeriformes, Emberizidae)

Procurou-se estabelecer uma relação entre o comprimento dos dias durante o ano e o comportamento reprodutivo em Sicalie flaveola (Linnaeus, 1766). Foram observados casais em cativeiro na Fundação Parque Zoológico de São Paulo e na natureza na Faz. Jatibaia, Campinas, SP. Pode-se verificar a ocorrência de inatividade reprodutiva, nos casais era cativeiro, a partir de dias de comprimentos de 11:05 h e um reinício a partir de dias com mais de 10:55 h. Na natureza a inatividade teve início em dias com menos de 11:55 h e reinício em dias com mais de 11:00 h. Pelos dados apresentados, lêvando-se em conta que a alimentação foi sempre a mesma para os casais mantidos em cativeiro durante o ano todo, a variação do comprimento dos dias influiu na atividade reprodutiva desta espécie

Comportamento reprodutivo de Volatinia jacarina jacarina (Linnaeus, 1766) em cativeiro (Passeres, Emberizidae)

<abstract language="eng">Sixpairs of Volatina jacarina have been studied under captivity condition. Territorial defense was displayed by male as well as by female, through agonistic displays joined to characteristic vocalization. Several vocalizations have been identified and described. Courtship behaviour have also been observed. Male and female contributed both to the building of the nest, which is of the cup type, but the male alone was responsible for the chosen place. The average number of eggs by clutch was 2.3 (n = 2.8). Incubation have been depending on the sole female and the average incubation period was 10.6 days (n = 10). Both male and female fed the young with small arthropods and seeds. Nestlings remained in the nest for nine days (n = 9). A gular sac was present in the adults while they fed their young. Independence of the young was adquired in about one month. An internuptial plumage appeared during the non-reproductive period