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 …

Abstract Changes in phenology and distribution are being widely reported for many
migratory species in response to shifting environmental conditions. Understanding these …

Changes in phenology in response to ongoing climate change have been observed in
numerous taxa around the world. Differing rates of phenological shifts across trophic levels …

Stopovers comprise a significant proportion of the time that many birds spend migrating, and
researchers have long relied on these events to define and classify broader migratory …

The timing of avian migration has evolved to exploit critical seasonal resources, yet plasticity
within phenological responses may allow adjustments to interannual resource phenology …

Advancing breeding phenology is a commonly observed response to climate warming
among bird species, potentially in response to shifts in the phenology of key resources …

Matching the timing of annual cycle events with the required resources can have crucial
consequences for individual fitness. But as the annual cycle is composed of sequential …

Evolutionary theories of seasonal migration generally assume that the costs of longer
migrations are balanced by benefits at the non‐breeding destinations. We tested, and …

Long‐term population studies can identify changes in population dynamics over time.
However, to realize meaningful conclusions, these studies rely on accurate measurements …

Animals must balance various costs and benefits when deciding when to breed. The costs
and benefits of breeding at different times have received much attention, but most studies …