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Article
Jessica E. Deakin, Auteur ; Christopher G. Guglielmo, Auteur ; Yolanda E. Morbey, AuteurIn many migratory songbirds, males arrive earlier at stopover sites and at the breeding grounds (‘protandry’) and older birds precede younger ones, but less is known about age differences in protandry. In seasonal environments, differential timi[...]
Article
Chad L. Seewagen, Auteur ; Yanju Ma, Auteur ; Yolanda E. Morbey, Auteur ; Christopher G. Guglielmo, AuteurMercury (Hg) is a global pollutant that has wide-ranging impacts on the physiological systems of birds, but almost nothing is known about how this affects migration. We manipulated methylmercury (MeHg) burdens of 24 wild-caught Yellow-rumped War[...]
Article
Quentin R. Hays, Auteur ; Yolanda E. Morbey, Auteur ; Keith A. Hobson, Auteur ; James E. Lyons, Auteur ; Christopher G. Guglielmo, AuteurMigration distance and sex are integral to avian migration strategies, yet these intrinsic factors are understudied with respect to their effects on stopover ecology and behavior. We investigated how individual variation in migration distance an[...]
Article
Lisa V. Kennedy, Auteur ; Yolanda E. Morbey, Auteur ; Stuart A. Mackenzie, Auteur ; Philip D. Taylor, Auteur ; Christopher G. Guglielmo, AuteurQuantitative magnetic resonance (QMR) is a non-invasive technology used to measure body composition. It has great potential to advance the study of energetics and fuel use of migratory birds. However, there is concern that exposure to a strong m[...]
Article
Yolanda E. Morbey, Auteur ; Timothy Coppack, Auteur ; Francisco Pulido, AuteurOur understanding of avian migration has progressed significantly, yet the selective conditions that favor the arrival of males before females at the site of reproduction remain largely unclear. Here, we review the leading adaptive hypotheses fo[...]
