Movement, from foraging to migration, is known to be under the influence of the
environment. The translation of environmental cues to individual movement decision making …

Billions of animals migrate between breeding and non-breeding areas worldwide. Partial
migration, where both migrants and residents coexist within a population, occurs in most …

We often expect that investigations of the patterns, causes, and consequences of among-
individual variation in a trait of interest will reveal how selective pressures or ecological …

The transition to a migratory state involves coordinated changes in physiology and
behaviour. In species with regular, predictable (obligate) migrations, increasing day length …

Organisms have to cope with the changes that take place in their environment in order to
keep their physical and psychological stability. In vertebrates, the hypothalamic-pituitary …

While corticosterone (CORT) is often suggested to be an important hormone regulating
processes necessary for avian migration, there has been no systematic assessment of …

Avian migration is a challenging life stage susceptible to the adverse effects of stressors,
including contaminants like methylmercury (MeHg). Although birds often experience …

In both captive and free-living birds, the emergence of the migratory phenotype is signalled
by rapid and marked increases in food intake and fuelling, as well as changes in amount of …

Bird migration entails replenishing fuel stores at stopover sites. There, individuals make
daily decisions whether to resume migration, and must also decide their time of departure …

Highlights•Timing of reproduction and migration vary within and among populations.•Timing
differences arise from variation in neuroendocrine mechanisms.•Timing differences …