Mixed Flocks
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. The breeding biology, nest success, habitat and behavior of the endangered Saffron-cowled Blackbird, Xanthopsar flavus (Aves: Icteridae), at an Important Bird Area (IBA) in Rio Grande do Sul, Brazil
ABSTRACT The Saffron-cowled Blackbird, Xanthopsar flavus (Gmelin, 1788), is a globally vulnerable icterid endemic to grasslands and open areas, and a priority species for research and conservation programs. This contribution provides information on the population size, habitat, behavior, breeding biology and nest success of X. flavus in two conservation unit
Zoologia (Curitiba). Publicado em: 23/10/2017
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2. Feeding management strategy for male broiler breeders and its effects on body weight, hatchability and fertility
The objective of the present study was to evaluate the supply of a specific-male diet on rooster body weight, hatchability, and fertility. Two diets were supplied during the egg production period: treatment 1, diet formulated for females and containing, in average, 2,830 kcal ME/kg and 15% CP; and treatment 2, diet specifically formulated for male broiler br
Rev. Bras. Cienc. Avic.. Publicado em: 2014-12
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3. Curtain color and lighting program in broiler production: I - general performance
The objective of the present study was to evaluate mortality and performance, darkling beetle population (Alphitobius diaperinus), light intensity, electrical energy consumption and economic efficiency of broilers reared under two lighting programs (nearly continuous or intermittent) and two curtain colors (yellow or blue). The experiment was conducted betwe
Revista Brasileira de Zootecnia. Publicado em: 2011-09
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4. Resistance to Compression of Wool in Mixed-Aged Flocks.
Estimates of resistance to compression (adjusted for variations of both crimp frequency and fibre diameter) of 1852 wools derived from Corriedale breeding flocks varying in age composition (2-6 years old), where age group was pooled over four sampling years, were examined. Data are presented showing that age group did not influence the slope of the regressio
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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5. Ecologia de bandos mistos de aves na Estação Ecológica de Itirapina, estado de São Paulo
A degradação de áreas campestres naturais ainda remanescentes é intensa e prejudica a integridade ambiental destes ecossistemas. Parte da assembléia de aves que vive nestes ambientes exibe o comportamento de formação de bandos mistos, o qual traz benefícios para seus integrantes. Objetivamos analisar bandos mistos de aves presentes em três fisionomi
Publicado em: 2011
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6. Composition of mixed-species bird flocks in forest fragments of southern Brazil
The present study aimed to evaluate the composition of mixed-species bird flocks in a fragmented landscape of the Atlantic Forest in southern Brazil. We recorded 117 species in 218 mixed-species flocks. The correspondence analysis showed two distinct groups of fragments according to degree of connectivity with other fragments. The percentage of original cove
Zoologia (Curitiba). Publicado em: 2009-09
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7. Ecology of interactions between Coragyps atratus (Bechstein, 1793) and Caracara plancus (Miller,JF, 1777) in regions of Uberlândia - MG / Ecologia de interações entre Coragyps atratus (Bechstein, 1793) e Caracara plancus (Miller, 1777) no município de Uberlândia (MG)
Although seldom reported, necrophagy is a relatively common phenomenon in nature. Among necrophagous vertebrates, scavengers are the only ones who have a diet composed almost exclusively by carrion. There are five species of scavengers recorded in Brazil and in some Brazilian regions these species can live in sympatry, interacting with each other and with sp
Publicado em: 2008
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8. Ecologia de bandos mistos de aves em uma paisagem de floresta atlântica no sul do Brasil
O presente estudo avaliou a composição de bandos mistos de aves em uma paisagem de Floresta Atlântica, verificando se há estratificação entre os bandos de acordo com o estrato vertical vegetacional utilizado pelas espécies, e como os aspectos da paisagem influenciam a composição dos bandos mistos. Onze remanescentes florestais localizados na Bacia d
Publicado em: 2008
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9. Composição, estrutura e sazonalidade dos bandos mistos de aves em um remanescente de floresta paludosa no sul do Brasil
Analisou-se a composição, estrutura e padrão sazonal de formação dos bandos mistos de aves em um remanescente de floresta paludosa na planície costeira do Rio Grande do Sul, sul do Brasil. Efetuaram-se amostragens mensais de fevereiro de 2005 a janeiro de 2006, com observações ocasionais em 2004 e janeiro de 2005. Pontos de contagem foram utilizados
Publicado em: 2007
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10. Ectoparasitismo em aves silvestres em um fragmento de mata (Uberlândia, MG)
This work aimed: to determine the prevalence and the parasitic burden of ticks in wild birds; to identify the species of ticks found in those birds; to correlate the occurrence and the parasitic load of ticks with ecological variables of the hosts; and to determine the prevalence of feather mites and of chewing lices in the species of captured birds. The stu
Publicado em: 2005
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11. Lamella design (high rate) and conventional flotation units applied to the post-treatment of the effluent from a system made up anaerobic reactor followed by aerobic reactor treating domestic sewage / Emprego da flotação lamelar de alta taxa e convencional como pós-tratamento do efluente de sistema constituído de reator anaeróbio seguido de reator aeróbio tratando esgoto sanitário
The aim of this research was the study of the lamella design (high rate) and conventional dissolved air flotation (DAF) process potentiality of application as the final part of a domestic sewage sequential treatment system made up anaerobic reactors (UASB) followed by aeration tank. The work, developed at the Jardim das Flores WWTP of Rio Claro city, was sep
Publicado em: 2005
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12. Avifauna associada ao estuário do Saco da Fazenda, Itajaí, Santa Catarina, Santa Catarina
The estuary is an important feeding and resting site for mixed flocks of coastal seabirds, limnological inhabitants and also edge inhabitants. Once in a month, three census were done on the bird fauna with two hours intervals within observations, during the period from January/96 to December/98. The results showed the presence of 45 species, where 45,7% were
Revista Brasileira de Zoologia. Publicado em: 2000-06