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| Registros recuperados: 119 | |
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| Santos,Marcos Pérsio Dantas. |
| This study analyzes the ornithological data available for the Brazilian state of Roraima, focusing on sampling gaps. All ornithological data collected in Roraima up to the present were collated with the aim of answering the following questions: (a) which sites have been well sampled? (b) Are there are any geographic gaps? (c) What is the current extent of the scientific knowledge of avian diversity in Roraima? (d); Which regions and vegetation types have been well-sampled, and which should be prioritized for future surveys? Ornithological data were obtained from a total of 82 localities, including the Maracá Ecological Station (442 species), Viruá National Park (420 species), Colônia do Apiaú (320 species), Mucajaí (267 species), and Pacaráima (212... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Birds; Conservation; Rio branco; Sampling gaps. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000200008 |
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| Mallet-Rodrigues,Francisco; Parrini,Ricardo; Pimentel,Leonardo M. S.; Bessa,Rafael. |
| We studied the altitudinal distribution of 426 bird species in the Serra dos Órgãos, a mountainous region in southeastern Brazil. Thirty-four localities were visited between 1991 and 2009. Our study revealed a decline in bird species richness with elevation, although a smaller number of species was recorded at lower altitudes (below 300 m) possibly due to local extinctions caused by the intense human occupation of the region. A less diverse avifauna was found above 2,000 m, with only one species (Caprimulgus longirostris) recorded exclusively in this altitudinal range. Most endemic species were found between 300 and 1,200 m, but the endemism was more significant at higher altitudes. Nearly half of the birds found above 1,400 m were endemic species. Most of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Avifauna; Birds; Elevational distribution. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000400003 |
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| Pinto,Roberto Magalhães; Noronha,Dely. |
| Data on nematodes of the genus Pelecitus Railliet & Henry, 1910, namely P. fulicaeatrae (Diesing, 1851) López-Neyra, 1956, P. anhingae Vuylsteke, 1957, P. tubercauda Vanderburgh, Anderson & Stock, 1984, P. vuylstekae (Molin, 1860) Bartlett & Greiner, 1986, P. tercostatus (Molin, 1860) Railliet & Henry, 1910, P. helicinus (Molin, 1860) Railliet & Henry, 1910, P. circularis (Molin, 1860) Railliet & Henry, 1910 and Pelecitus sp., are presented, with basis on 29 nematode samples recovered from Brazilian birds representing 13 families and 19 species that were captured between 1934-1951 in the southeastern and central regions; parasites were formerly deposited as unidentified material in the Helminthological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Birds; Nematodes; Pelecitus. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200029 |
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| Araujo, Caroliny Costa; Rodrigues, Kênia Ferreira; Vaz, Roberta Gomes Marçal Vieira; Conti, Ana Carolina Muller; Amorim, Aline Ferreira; Campos, Carla Fonseca Alves. |
| The objective of this work was to identify, by means of different statistical criteria the ideal nonlinear regression model to describe the growth curve of three lineages of caipira broiler for meat production. A total of 90 birds were used, being 30 birds from each of the following lineages: Pescoço Pelado, Carijó and Pesadão Vermelho. The individual body weight of broilers (1, 7, 14, 21,28, 35, 42, 49, 56, 63, 70, 77, 84 and 91 days of age) was collected weekly for determination of growth curves by means of Models von Bertalanffy, Gompertz, Logistic, Richards and Brody. The parameters of Brody model did not converge to the weight of strains. The model that better adjusted to the data was Logistic. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zootecnia e Produção Animal statistical model; Birds; Weight; Age; Lineage.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/38806 |
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| Ramírez-Otárola,Natalia; Sabat,Pablo. |
| Digestive capabilities, such as the rates nutrient hydrolysis and absorption, may affect energy intake and ultimately feeding behavior. In birds, a high diversity in gut biochemical capabilities seems to support the existence of a correlation between the morphology and physiology of the intestinal tract and chemical features of the natural diet. However, studies correlating the activity of digestive enzymes and the feeding habits at an evolutionary scale are scarce. We investigated the effect of dietary habits on the digestive physiological characteristics of eight species of passerine birds from Central Chile. The Order Passeriformes is a speciose group with a broad dietary spectrum that includes omnivorous, granivorous and insectivorous species. We... |
| Tipo: Journal article |
Palavras-chave: Birds; Diet; Intestinal enzymes; Passeriformes; Food habits; Adaptation. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000100011 |
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| Shamoun-Baranes, Judy; Universiteit van Amsterdam; shamoun@uva.nl; Bouten, Willem; Universiteit van Amsterdam; w.bouten@uva.nl; Buurma, Luit; Bird Strike Fund; LuitBuurma@worldmail.nl; DeFusco, Russell; BASH Inc.; BirdManRuss@aol.com; Dekker, Arie; Royal Netherlands Air Force; a.dekker@mindef.nl; Sierdsema, Henk; SOVON, Dutch Centre for Field Ornithology; Henk.Sierdsema@sovon.nl; Sluiter, Floris; Universiteit van Amsterdam; fsluiter@science.uva.nl; van Belle, Jelmer; Royal Netherlands Air Force; jelmer.van.belle@hetnet.nl; van Gasteren, Hans; Royal Netherlands Air Force; JR.v.Gasteren@mindef.nl; van Loon, Emiel; Universiteit van Amsterdam; vanloon@uva.nl. |
| Collisions between aircraft and birds, so-called “bird strikes,” can result in serious damage to aircraft and even in the loss of lives. Information about the distribution of birds in the air and on the ground can be used to reduce the risk of bird strikes and their impact on operations en route and in and around air fields. Although a wealth of bird distribution and density data is collected by numerous organizations, these data are not readily available nor interpretable by aviation. This paper presents two national efforts, one in the Netherlands and one in the United States, to develop bird avoidance nodels for aviation. These models integrate data and expert knowledge on bird distributions and migratory behavior to provide hazard... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Birds; Distribution; Flight safety; Migration; Spatial modeling; Web services.. |
| Ano: 2008 |
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| Carvalho,T.S.G.; Zangeronimo,M.G.; Saad,C.E.P.; Alvarenga,R.R.; Assis,V.D.L.; Pereira,V.M.; Scalon,J.D.; Silva,J.P.. |
| Behavioural studies with cockatiels (Nymphicus hollandicus) in captivity are scarce. Due to the need for appropriate management of these animals, this study was performed to examine the behaviour of cockatiels kept in captivity at two temperatures. Sixteen cockatiels were individually housed in cages (62cm high x 43cm long x 27cm wide) and fed with a commercial ration and seed mixture for psittacids. Water was provided ad libitum. The eight-day experiment was divided into two stages of four days each. In the first stage, the birds were kept at room temperature (25°C) with 70% relative humidity during 24 hours. In the next stage, they were kept at 35°C from 06:00 to 18:00h and 25°C from 18:00 to 06:00h, also at 70% relative humidity. The behaviour of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Psittaciformes; Parrot; Thermal comfort; Captivity; Animal welfare. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000601669 |
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| VIELLIARD,JACQUES M. E.. |
| This short review presents the results obtained in several localities of Brazil on the composition of forest bird communities. Data were collected since the late 80's, after we introduced a new methodology of quantitative survey, based on acoustic identification and unlimited-radius point census. Although these data are still scattered, they show uniquely precise and coherently comparative patterns of composition of forest bird communities. Our methodology has the advantage of being absolutely non-disturbing, highly efficient in the field and immediately processed. Results confirm that the structure of a bird community is a good indicator of biodiversity, particularly useful where biodiversity is high. Many of these data are available only in unpublished... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Community; Census; Brazil; Biodiversity; Conservation. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000300006 |
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| Tisdell, Clement A.; Wilson, Clevo. |
| Lamington National Park in Queensland, Australia is noted for its rainforest and is part of the World Heritage listed property but prior to this work, no systematic study has been done of the importance of birds to its visitors. This study is based on data from survey forms handed to visitors at an important site in the park and completed by visitors following their visit. It yielded 622 useable responses. These enabled us to establish the comparative importance of birds as an attraction to this site for this sample of visitors. Furthermore, logit regression is used to target analysis and to identify factors that increase the likelihood of a visitor saying that birds are an important attraction. In addition, the relative importance to visitors of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Lamington National Park; Tourism; Australian rainforest; Conservation; Birds; Environmental Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/51296 |
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| Tisdell, Clement A.; Wilson, Clevo. |
| Lamington National Park in Queensland, Australia is noted for its rainforest and is part of Australia’s fourteen World Heritage listed properties but no systematic study has been done of the importance of birds to its visitors. This study rectifies this situation. It is based on data from survey forms handed to visitors at an important site in this park and completed by visitors following their visit. This yielded 622 useable replies. These enabled us to establish the comparative importance of birds as an attraction to this site. Furthermore, logit regression is used to analyze and to identify factors that increase the likelihood of a visitor saying that birds are an important attraction. In addition, the relative importance to visitors of various... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Australia; Biodiversity; Birds; Rainforest; Tourism; Environmental Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/48976 |
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| Registros recuperados: 119 | |
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