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 …

Migratory birds regularly perform impressive long-distance flights, which are timed relative to
the anticipated environmental resources at destination areas that can be several thousand …

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 a widespread phenomenon among many taxa. This complex behaviour enables
animals to exploit many temporally productive and spatially discrete habitats to accrue …

We hypothesized differences in molecular strategies for similar journeys that migrants
undertake to reproduce in spring and to overwinter in autumn. We tested this in redheaded …

Previous studies have found that migratory birds generally have a more diverse array of
pathogens such as parasites, as well as higher intensities of infection. However, it is not …

Environmental changes are simultaneously affecting parasitic diseases and animal
migrations, making it important to understand the disease dynamics of migratory species …

Background Body weight is defended by strong homeostatic forces. Several of the key
biological mechanisms that counteract weight loss have been unraveled over the last …

The arcuate nucleus is generally conserved across vertebrate taxa in its neuroanatomy and
neuropeptide expression. Gene expression of agouti-related protein (AGRP), neuropeptide …

Endocrinologists can make significant contributions to conservation biology by hel** to
understand the mechanisms by which organisms cope with changing environments. Field …