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

Migratory birds are physiologically specialized to accumulate massive fat stores (up to 50–
60% of body mass), and to transport and oxidize fatty acids at very high rates to sustain flight …

We describe a new collaborative network, the Motus Wildlife Tracking System (Motus;
https://motus. org), which is an international network of researchers using coordinated …

Migration, broadly defined as directional movement to take advantage of spatially distributed
resources, is a dramatic behaviour and an important component of many life histories that …

Migration is well developed among mammals, but there has been little attempt to date to
review common ecological constraints that may guide the evolution of migration among …

Migratory vertebrates adjust their movements in response to environmental change.
Throughout their migrations, they gather information, integrate environmental and internal …

During migration, long-distance migratory songbirds may fly nonstop for days, whereas
shorter-distance migrants complete flights of 6 to 10 h. Fat is the primary fuel source, but …

Many migratory species have experienced substantial declines that resulted from rapid and
massive expansions of human structures and activities, habitat alterations and climate …

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 …

Understanding of migration in small bats has been constrained by limitations of techniques
that were labor-intensive, provided coarse levels of resolution, or were limited to population …