… The birds were measured by one of three ringers (AL, Á.ZL and C. Tóth), who standardized
… Scholarship Board and Á.ZL held a postdoctoral grant from the Fyssen Foundation. …

… (Lendvai et al. 2007; Lendvai and Chastel 2008). Parents’ stress responses were higher
when they had less valuable (ie, smaller or poor‐quality) broods than when they were tending …

Innovative behaviors such as exploiting novel food sources can grant significant fitness
benefits for animals, yet little is known about the mechanisms driving such phenomena, and the …

… Á.ZL analysed the RFID data and calculated provisioning rates. ARC completed the … Á.ZL
was supported by the Hungarian Scientific Fund (OTKA K113108) and the Romanian Ministry …

Indicator models of sexual selection predict that exaggerated traits communicate information
about sender condition or quality to conspecific receivers. Environmental challenges have …

As urbanized areas expand and develop throughout the world, the importance of understanding
their effects on wildlife increases. Living in cities may be stressful for animals but may …

Individuals respond differently to stressors and it has been suggested that stress responses
are related to coping styles (consistent individual differences in behavior and physiology). …

Whilst the immune system often varies seasonally and exhibits differences between males
and females, the general patterns in seasonality and sex differences across taxa have …

… Heidinger, Z. Barta and the anonymous referees for their insightful comments on the … Á.ZL
was supported by a scholarship of the French Government, the Hungarian Scholarship Board (…

Synopsis All organisms must anticipate and balance energetic demands and available
resources in order to maximize fitness. As hormones coordinate many interactions between an …