In birds, accumulating energy is far slower than spending energy during flight. During
migration, birds spend, therefore, most of the time at stopover refueling energy used during …

With many of the world's migratory bird populations in alarming decline, broad‐scale
assessments of responses to migratory hazards may prove crucial to successful …

Millions of nocturnally migrating birds die each year from collisions with built structures,
especially brightly illuminated buildings and communication towers. Reducing this source of …

Migrating birds require en route habitats to rest and refuel. Yet, habitat use has never been
integrated with passage to understand the factors that determine where and when birds …

As wind energy rapidly expands worldwide, information to minimize impacts of this
development on biodiversity is urgently needed. Here we demonstrate how data collected …

Migratory animals are affected by various factors during their journeys, and the study of
animal movement by radars has been instrumental in revealing key influences of the …

The distributions of birds during migratory stopovers are influenced by a hierarchy of factors.
For example, in temperate regions, migrants are concentrated near areas of bright artificial …

Aim Millions of birds take to the air for nocturnal migrations. Although it is widely recognized
that migrants generally depart after sunset, nightly migration timing and their dependence on …

Weather radars provide detailed information on aerial movements of organisms. However,
interpreting fine-scale radar imagery remains challenging because of changes in aerial …

Flights over open water can be challenging for migrating songbirds. Despite numerous
observations of songbirds migrating over remote islands, virtually nothing is known about …