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| Oniki,Yoshika; Antunes,Alexsander Z.; Willis,Edwin O.. |
| The hummingbird Amazilia lactea (Lesson, 1832) built a nest in São Paulo, Brazil, in the spring (Oct) and added lichens during incubation. The female incubated over 70 per cent of the day, 1-56 min per visit, and brooded two small young somewhat less; brooding stopped by about 10 days of age, as did night brooding. Lack of night brooding for large young hummingbirds may reflect lack of space in a small nest. Young stayed in the nest 19 days. Feedings were widely spaced, and presence of possible predators caused alarm. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazilia lactea; Nest; Behavior; Brazil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212000000200007 |
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| Willis,Edwin O.; Oniki,Yoshika. |
| In uplands and lowlands of Santa Teresa, central Espírito Santo State, Brazil, 405 bird species were confirmed by field, museum, and literature studies. Of these, 16 seem to have disappeared, while 67 other species seem to have been lost from the lowlands (where no large biological reserves exist). Due to a suggestion that human areas add species to beta-diversity, we verified that up to 79 species now present have perhaps "invaded" with human activity (and 10 others are likely to invade), a total similar to that for lost species. However, lost species are often rare and invading species often widespread, resulting in exchange of "Picassos for Coca-Cola bottles." Furthermore, gains exceed losses only when large biological reserves are present, as in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic forest; Avifaunas; Beta-diversity; Biodiversity; Biogeography; Biological reserves; Espírito Santo; Luxury tax; Productivity. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492002000900001 |
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| Oniki,Yoshika; Willis,Edwin O.. |
| Abstract Birds that prey on arthropods flushed by army ants north of the eastern Amazon were studied at Serra do Navio and Reserva Ducke (Brazil) and at Nappi Creek and Bartica (Guyana). Regular ant-followers are two medium-sized antbirds (Percnostola rufifrons and Gymnopithys rufigula) and two smaller ones (Pithys albifrons and Hylophylax poecilonota), plus five woodcreepers of differing sizes (from very large Hylexetastes perrotti through Dendrocolaptes picumnus, D. certhia, and Dendrocincla merula to medium-sized Dendrocincla fuliginosa). Four other regular ant-followers occur in the region but were not found at the study areas. Forty-five species of casual or nonprofessional ant-followers, including 16 antbirds, 5 woodcreepers, and 5 manakins, also... |
| Ano: 1972 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671972000200127 |
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| Oniki,Yoshika. |
| Abstract Although birds are protected on the Agronomic Institute at Belém, and within a forest reserve at Manaus, there is some human destruction of easily located nests in open areas. Both adults and young of a few species are occasionally captured for the cage-bird trade. Populations of most species seem unaffected, but one species of large seedeater has become rare. |
| Ano: 1977 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671977000400555 |
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| Oniki,Yoshika. |
| Abstract Studies of ant-following birds at Belém show that some species are professional ant-followers, that is, obtain more than 50% of their food near ants. Professional ant-followers at Belém are: Black-spotted Bare-Eye, Phlegopsis nigromaculata, White-backed Fire-Eye, Pyriglena leuconota, Scale-backed Antbird, Hylophylax poecilenota (Formicariidae); Barred Woodcreeper, Dendrocolaptes certhia, Plain-brown Woodcreeper, Dendrocincla fuliginosa, White-chinned Woodcreeper, D. merula; and Gray-headed Tanager Eucometis penicillata, A list of thirty-seven species of nonprofessional birds was obtained during the study period. Nonprofessional species only occasionally follow army ant raids. The army ant (Eciton burchelli) was the main species followed. Foraging... |
| Ano: 1972 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671972000100059 |
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