The green-up of vegetation in spring brings a pulse of food resources that many animals
track during migration. However, green-up phenology is changing with climate change …

Animals and plants are shifting the timing of key life events in response to climate change,
yet despite recent documentation of escalating phenological change, scientists lack a full …

Consistent with a warming climate, birds are shifting the timing of their migrations, but it
remains unclear to what extent these shifts have kept pace with the changing environment …

Bird migration is a synchronized event that has evolved over thousands of years. Changing
temperatures due to climate change threaten the intricacies of migration timing for birds; …

In temperate regions, the annual pattern of spring onset can be envisioned as a 'green
wave'of emerging vegetation that moves across continents from low to high latitudes …

The seasonal movement of animals has been linked to seasonal variation in ecological
productivity, and it has been hypothesized that primary consumers synchronize migration …

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

Globally, bird migration is occurring earlier in the year, consistent with climate-related
changes in breeding resources. Although often attributed to phenotypic plasticity, there is no …

Because of their reliance on temporally predictable resources across large spatial scales,
migratory birds may be especially vulnerable to anthropogenic climate and land-use …

Migratory birds track seasonal resources across and between continents. We propose a
general strategy of tracking the broad seasonal abundance of resources throughout the …