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Article
Rebecca E. Koch, Auteur ; Kevin J. McGraw, Auteur ; Geoffrey E. Hill, AuteurABSTRACT Atlantic Canaries (Serinus canaria) are the most commonly kept caged bird with extensive carotenoid-based plumage coloration. Domestic strains of canaries have been bred for a variety of colors and patterns, making them a valuable model[...]
Article
Rebecca E. Koch, Auteur ; Geoffrey E. Hill, AuteurABSTRACT Males exhibit more colorful plumage than females in many bird species. Phylogenetic reconstructions indicate that transitions from dichromatism to monochromatism are not uncommon and that monochromatism can result from the evolution of [...]
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Mexander V. Badyaev, Auteur ; Geoffrey E. Hill, Auteur ; Douglas J. Futuyma, Auteur
Article
Russell A. Ligon, Auteur ; Mark Liu, Auteur ; Geoffrey E. Hill, Auteur
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Laura K. Estep, Auteur ; Matthew D. Shawkey, Auteur ; Geoffrey E. Hill, AuteurCarotenoid-based feather colouration is a classic example of a condition-dependent ornamental trait. In some species of birds, red, orange and yellow feather colouration reflects male quality and advertises the carotenoid concentration of feathe[...]
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Geoffrey E. Hill, Auteur ; Xiaoyu Fu, Auteur ; Susan Balenger, Auteur ; Kevin J. McGraw, Auteur ; Mathieu Giraudeau, Auteur ; Wendy R. Hood, AuteurHeat-shock proteins (HSP) are molecular chaperones that play key roles in the maintenance of cellular homeostasis under variable environmental conditions. Although HSP are frequently used in studies of wild vertebrates as indicators of stress, n[...]
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Stéphanie M. Doucet, Auteur ; Geoffrey E. Hill, AuteurMuseum specimens continue to be an invaluable resource for taxonomic, systematic, and comparative studies, and are increasingly relied upon for novel research purposes. Evaluating variation in the colour of avian study skins forms the basis for [...]
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Adrian Surmacki, Auteur ; Mark Liu, Auteur ; Austin Mercadante, Auteur ; Geoffrey E. Hill, AuteurWe used observations of male eastern bluebirds captured twice within a breeding season to test whether changes in structural coloration are related to feather abrasion. Between first and second broods, the UV chroma and brightness of feathers de[...]
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Nathan Soley, Auteur ; Lynn Siefferman, Auteur ; Kristen J. Navara, Auteur ; Geoffrey E. Hill, Auteur
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Rebecca E. Koch, Auteur ; Geoffrey E. Hill, Auteur
Article
Christopher JW McClure, Auteur ; Brian W. Rolek, Auteur ; Geoffrey E. Hill, Auteur
Article
Lynn Siefferman, Auteur ; Geoffrey E. Hill, AuteurIn species with bi-parental care, individuals must partition energy between parental effort and mating effort. Typically, female songbirds invest more than males in reproductive activities such as egg-laying and incubation, but males invest more[...]
