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Documents disponibles écrits par cet auteur (12)
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Article
Ilsa A. Griebel, Auteur ; Russell D. Dawson, AuteurYoung nest-bound birds often face a diversity of ectoparasites that typically feed on blood and can negatively affect nestling morphological and physiological traits, including hemoglobin concentration. While hemoglobin concentration can be corr[...]
Article
Jeannine A. Randall, Auteur ; Russell D. Dawson, AuteurEvolutionary biologists have long debated the functional relevance of the ornamental traits that occur in many animal taxa, and yet, female ornaments have received relatively little attention compared to those produced by males. A greater unders[...]
Article
Robert G. Clark, Auteur ; David W. Winkler, Auteur ; Russell D. Dawson, Auteur ; Dave Shutler, Auteur ; David J. T. Hussell, Auteur ; Michael P. Lombardo, Auteur ; Patrick A. Thorpe, Auteur ; Peter O. Dunn, Auteur ; Linda A. Whittingham, AuteurDetermining demographic rates in wild animal populations and understanding why rates vary are important challenges in population ecology and conservation. Whereas reproductive success is reported frequently for many songbird species, there are r[...]
Article
Jeannine A. Randall, Auteur ; Russell D. Dawson, AuteurDetermining the functional significance of ornamental traits and whether they are shaped by sexual selection requires understanding how they vary among individuals, and their relationship with other measures of quality. Conspicuous eggshell colo[...]
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Jeannine A. Randall, Auteur ; Russell D. Dawson, AuteurTechnological and theoretical advances over the past two decades have allowed researchers to quantify eggshell color in ways that were not previously possible. However, differences among studies in the timing of color measurements during laying [...]
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Pierre-Paul Bitton, Auteur ; Russell D. Dawson, AuteurAge-related differences in plumage characteristics of birds can be the result of differential survival of more ornamented individuals, within-individual changes in plumage attributes with age, or a combination of both. In this study, we investig[...]
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Pierre-Paul Bitton, Auteur ; Russell D. Dawson, AuteurReproductive success and nestling performance are related to the age of parents across several vertebrate taxa. However, because breeding experience and prenatal maternal investment in reproduction often covary, the source of these age-related d[...]
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Jesus Gomez, Auteur ; Chantel I. Michelson, Auteur ; David W. Bradley, Auteur ; D. Ryan Norris, Auteur ; Lisha L. Berzins, Auteur ; Russell D. Dawson, Auteur ; Robert G. Clark, AuteurOur understanding of the annual life-cycle movements of small migratory birds has advanced rapidly with the advent of light-weight geographical positioning devices (i.e., geolocators), yet the effects of geolocators on reproduction and survival [...]
Article
Erin L. O'Brien, Auteur ; Russell D. Dawson, AuteurVertebrate hosts differ in their level of parasite susceptibility and infestation. In avian broods, variation in susceptibility of nestlings to ectoparasites may be associated with non-uniform distributions of parasites among brood mates, with p[...]
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Erin L. O'Brien, Auteur ; Russell D. Dawson, AuteurMany birds have been shown to reduce their reproductive investment in response to infestation of nest sites by ectoparasites. Nest-dwelling parasite populations increase throughout the breeding season, and can reduce the condition and future sur[...]
Article
Russell D. Dawson, Auteur ; Erin L. O'Brien, Auteur ; Theodore J. Mlynowski, AuteurMany species of birds line their nests with feathers, and it has been hypothesized that this functions to provide a thermally stable microenvironment for the development of eggs and nestlings. Feathers in the nest may also function as a mechanis[...]
