Populations of migratory birds are usually considered to be limited by conditions in breeding
or wintering areas, but some might be limited by conditions encountered on migration. This …

Long-distance migratory birds are often considered extreme athletes, possessing a range of
traits that approach the physiological limits of vertebrate design. In addition, their movements …

It has been suggested that birds migrate faster in spring than in autumn because of
competition for arrival order at breeding grounds and environmental factors such as …

The Flexible Phenotype attempts a true synthesis of physiology, behaviour, and ecology by
developing an empirical argument that describes the intimate connections between …

Unlike exercising mammals, migratory birds fuel very high intensity exercise (eg, flight) with
fatty acids delivered from the adipose tissue to the working muscles by the circulatory …

Billions of vertebrates migrate to and from their breeding grounds annually, exhibiting
astonishing feats of endurance. Many such movements are energetically costly yet there is …

The phenomenon of bird migration has fascinated people from time immemorial. The
arrivals and departures of different species marked the seasons, heralding spring and …

Many migratory bird species fly mainly during the night (nocturnal migrants), others during
daytime (diurnal migrants) and still others during both night and day. Need to forage during …

Bird migration has created interest for hundreds of years (Stillingfleet, 1762). Early writers
regarded migration as an instinctive, innate process. From historical data we know also that …

We used satellite transmitters to track the 2000–2003 spring migrations of adult female
Northern Pintails (Anas acuta L., 1758) from California's Central Valley, USA. PTT-tagged …