... Activity Diet Workload Corticosterone Zebra finch Natural Sciences and Engineering Research Council RGPIN/03949-2018 RGPAS/429387-2012 Birds exhibit significant changes in body mass and fat reserves over the course of the annual cycle ( Blem, 1976 , 1990 ). Consequently, it has...

...Kang Nian Yap; Donald R. Powers; Melissa L. Vermette; Olivia Hsin-I Tsai; Tony D. Williams ABSTRACT Foraging at elevated rates to provision offspring is thought to be an energetically costly activity and it has been suggested that there are physiological costs associated with the high workload...

...Kang Nian Yap; Donald R. Powers; Melissa L. Vermette; Olivia Hsin-I. Tsai; Tony D. Williams ABSTRACT Free-living animals often engage in behaviour that involves high rates of workload and results in high daily energy expenditure (DEE), such as reproduction. However, the evidence for elevated DEE...

... success and survival). Nevertheless, the physiological mechanisms that allow some individuals to support higher foraging performance, and the mechanisms underlying costs of high workload, remain poorly understood. We experimentally manipulated foraging behaviour in zebra finches ( Taeniopygia guttata...

... understanding of physiological processes underlying life history trade-offs. * Author for correspondence (e-mail: [email protected] ) † Deceased 3 June 2007 23 4 2008 © The Company of Biologists Limited 2008 2008 foraging costs food restriction workload daily energy...