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

Spatial and temporal fluctuations in resource availability have led to the evolution of varied
migration patterns. In order to appropriately time movements in relation to resources …

While corticosterone (CORT) is often suggested to be an important hormone regulating
processes necessary for avian migration, there has been no systematic assessment of …

As humans alter landscapes worldwide, land and wildlife managers need reliable tools to
assess and monitor responses of wildlife populations. Glucocorticoid (GC) hormone levels …

Stopovers play a crucial role for the success of migrating animals and are key to optimal
migration theory. Variation in refuelling rates, stopover duration and departure decisions …

Most migrating birds need to stopover in between flights in order to refuel. Lately, additional
purposes of stopover have been suggested, including physiological recovery from …

The transition to a migratory state involves coordinated changes in physiology and
behaviour. In species with regular, predictable (obligate) migrations, increasing day length …

Migratory flight is physiologically highly demanding and has been shown to negatively affect
multiple parameters of constitutive immune function (CIF), an animal's first line of …

Glucocorticoids (GCs) are metabolic hormones that promote catabolic processes, which
release stored energy and support high metabolic demands such as during prolonged …

Avian migration is a challenging life stage susceptible to the adverse effects of stressors,
including contaminants like methylmercury (MeHg). Although birds often experience …