Global movement patterns of migratory birds illustrate their fascinating physical and
physiological abilities to cross continents and oceans. During their voyages, most birds land …

Using optimality perspectives is now regarded as an essential way of analysing and
understanding adaptations and behavioural strategies in bird migration. Optimization …

The forage-maturation hypothesis (FMH) states that herbivores migrate along a
phenological gradient of plant development in order to maximize energy intake. Despite …

Recent shifts in phenology in response to climate change are well established but often
poorly understood. Many animals integrate climate change across a spatially and temporally …

Offspring sex ratios in wild bird populations, and the extent to which they vary from the
equality expected by random genotypic sex determination, have received much recent …

Many studies have reported statistically significant associations between bird migratory
phenology and climatic variables, and, consequently, it is mostly accepted that recent shifts …

Adult sex ratio (ASR) exhibits immense variation in nature, although neither the causes nor
the implications of this variation are fully understood. According to theory, the ASR is …

The small size of the billions of migrating songbirds commuting between temperate breeding
sites and the tropics has long prevented the study of the largest part of their annual cycle …

The twenty-first century has witnessed an explosion in research on animal migration, in
large part due to a technological revolution in tracking and remote-sensing technologies …

Recent advances in spring arrival dates have been reported in many migratory species but
the mechanism driving these advances is unknown. As population declines are most widely …