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Article
Amy-Lee Kouwenberg, Auteur ; J. Mark Hipfner, Auteur ; Donald W. McKay, Auteur ; Anne E. Storey, AuteurExamining factors that operate outside the breeding season may provide new insights into life-history traits such as egg size, in which individual variation has not been fully explained. We measured corticosterone (CORT) levels and 15N values (t[...]
Article
Amy-Lee Kouwenberg, Auteur ; Donald W. McKay, Auteur ; Michelle G. Fitzsimmons, Auteur ; Anne E. Storey, AuteurGlucocorticoid levels measured in the blood of animals reflect hypothalamic-pituitary-adrenal (HPA) activity in response to predictable and unpredictable changes. In birds, circulating corticosterone is incorporated into growing feathers and pro[...]
