Within populations, individuals often show repeatable variation in behaviour, called 'animal
personality'. In the last few decades, numerous empirical studies have attempted to …

Variations in the reproductive and survival abilities of individuals within a population are
ubiquitous in nature, key to individual fitness, and affect population dynamics, which leads to …

The concept of stress is notoriously difficult to define, despite its ubiquity in both common
parlance and the scientific literature. Given the clear importance of understanding how …

Environmental change often causes decreased food availability and/or increased foraging
costs, putting wild animals at risk of starvation. Body-fat reserves can enable individuals to …

Populations of animals comprise many individuals, interacting in multiple contexts, and
displaying heterogeneous behaviors. The interactions among individuals can often create …

The glucocorticoid hormone corticosterone (CORT) has classically been used in
ecophysiological studies as a proxy for stress and energy mobilization, but rarely are CORT …

Zoo‐based (ex situ) conservation breeding programs provide invaluable opportunities to
uncover enigmatic behaviors and traits of focal species under managed care, which can …

Climate change is generating range shifts in many organisms, notably along the elevational
gradient in mountainous environments. However, moving up in elevation exposes …

Early-life experiences can have far-reaching consequences for phenotypes into adulthood.
The effect of early-life experiences on fitness, particularly under adverse conditions, is …

Resource availability, acquisition, and assimilation drive trade-offs and shape life-history
strategies within individuals and across populations. With limited dispersal ability and …