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Article
Daniel W. Coulton, Auteur ; Robert G. Clark, Auteur ; David W. Howerter, Auteur ; Michael G. Anderson, Auteur ; Leonard I. Wassenaar, AuteurCosts and benefits of natal dispersal have not been fully evaluated in birds. We compared timing of breeding and nesting success for yearling female mallards Anas platyrhynchos returning to or dispersing from their natal areas. Information about[...]
Article
Jonathan A. Moran, Auteur ; Leonard I. Wassenaar, Auteur ; J. Cam Finlay, Auteur ; Cathie Hutcheson, Auteur ; Leigh Ann Isaac, Auteur ; Susan M. Wethington, AuteurRufous Hummingbirds (Selasphorus rufus) undertake an annual migration between breeding grounds in western North America and wintering grounds in south-central Mexico, with a small wintering population on the Gulf Coast of the USA. However, littl[...]
Article
Keith W. Larson, Auteur ; Miriam Liedvogel, Auteur ; Staffan Bensch, Auteur ; Susanne Åkesson, Auteur ; Leonard I. Wassenaar, Auteur ; Keith A. Hobson, AuteurWe present a comparison of feather stable isotope (C-13, N-15) patterns representing the habitat and diet conditions for two subspecies of willow warblers Phylloscopus trochilus that breed in parapatry, but winter in different regions of sub-Sah[...]
Article
Daniel W. Coulton, Auteur ; Robert G. Clark, Auteur ; Leonard I. Wassenaar, Auteur ; David W. Howerter, Auteur ; Michael G. Anderson, AuteurConspecific avoidance and attraction hypotheses have been proposed to explain patterns of animal spacing behavior and have been frequently used to explain habitat selection by dispersers. In birds, tests of these hypotheses have been limited to [...]
Article
Hannah B. Vander Zanden, Auteur ; Michael B. Wunder, Auteur ; Keith A. Hobson, Auteur ; Steven L. Van Wilgenburg, Auteur ; Leonard I. Wassenaar, Auteur ; Jeffrey M. Welker, Auteur ; Gabriel J. Bowen, AuteurPrecipitation stable isotope patterns over continental scales provide a fundamental tool for tracking origins of migratory species. Hydrogen isotopes from rain and environmental waters are assimilated into animal tissues and may thereby reveal t[...]
