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Documents disponibles écrits par cet auteur (14)
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Article
Carlos Biagolini-Jr, Auteur ; Pedro Diniz, Auteur ; Regina H. Macedo, Auteur ; Michael S. Webster, AuteurVegetation structural complexity surrounding nests can either provide concealment for intruders and mates or make it more difficult for hosts to recognize parasitic eggs. We investigated whether shading and vegetation aggregation increase extrap[...]
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Pedro Diniz, Auteur ; Edvaldo F. Silva-Jr, Auteur ; Regina H. Macedo, AuteurThe weekend effect hypothesis predicts that weekly cycles of human activity impact animal behaviour and physiology. This hypothesis has been supported in the context of recreational activity in natural environments but it is unknown whether it a[...]
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MILENE G. Gaiotti, Auteur ; João H. Oliveira, Auteur ; Regina H. Macedo, Auteur
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Eduardo S. A. Santos, Auteur ; Regina H. Macedo, Auteur
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Pedro H. L. Ribeiro, Auteur ; André C. Guaraldo, Auteur ; Regina H. Macedo, Auteur ; Lilian T. Manica, AuteurBirds are well known for displaying courtship exhibitions shaped by sexual selection that involve combinations of visual, motor, and acoustic components. Among such multifaceted exhibitions are those of male piprids, which can perform coordinate[...]
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Pedro Diniz, Auteur ; Edvaldo F. da Silva, Auteur ; Michael S. Webster, Auteur ; Regina H. Macedo, AuteurDuetting is a collective behavior and might have multiple functions, including joint territory defense and mate guarding. An important step toward understanding the adaptive function of bird song is to determine if and how singing behavior varie[...]
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MILENE G. Gaiotti, Auteur ; Wilmara Mascarenhas, Auteur ; Regina H. Macedo, AuteurDiet studies provide information about a species' ecology, evolution, and behavior. The Araripe Manakin (Antilophia bokermanni) is a critically endangered, endemic, and sexually dichromatic species from northeastern Brazil. Little is known about[...]
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Pedro Diniz, Auteur ; Pedro H. L. Ribeiro, Auteur ; Gianlucca S. Rech, Auteur ; Regina H. Macedo, AuteurNeotropical ovenbirds (family Furnariidae) are largely sexually monomorphic and monochromatic, which leads to the assumption that sexual selection has had little effect on the evolution of the morphological and plumage traits of the species in t[...]
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Rafael Maia, Auteur ; Regina H. Macedo, AuteurColors in feathers are produced by pigment deposition or by nanostructures within barbs or barbules. In the absence of pigments or nanostructures, light is scattered incoherently, producing white coloration. Honest advertisement models predict t[...]
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Regina H. Macedo, Auteur ; Lilian Manica, Auteur ; Raphael I. Dias, AuteurSexual selection has shaped many traits involving communication, behavior, morphology, and reproductive strategies. Sexual communication in the Blue-black Grassquit Volatinia jacarina involves an iridescent, nuptial plumage and the exhibition of[...]
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Vitor O. Lunardi, Auteur ; Regina H. Macedo, Auteur
Article
Raphael I. Dias, Auteur ; Regina H. Macedo, AuteurFood limitation is one explanation for differences in life-history traits, such as clutch size or nestling mortality, between tropical and temperate birds. Also predation has been considered one of the major factors shaping life-histories. We fo[...]
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Thais M. Aguilar, Auteur ; Raphael I. Dias, Auteur ; Ailton C. Oliveira, Auteur ; Regina H. Macedo, AuteurNest-site choice affects individual fitness and possibly reflects natural selection of the capacity of individuals to select appropriate microhabitat features. From 2003 to 2005, we examined nest-site characteristics and nesting success of Blue-[...]
