Seasonal bird migration may provide energy benefits associated with moving to areas with
less physiologically challenging climates or increased food availability, but migratory …

Seasonal migration is a widespread phenomenon, which is found in many different lineages
of animals. This spectacular behaviour allows animals to avoid seasonally adverse …

To evolve and to be maintained, seasonal migration, despite its risks, has to yield fitness
benefits compared with year-round residency. Empirical data supporting this prediction have …

Migration is energetically expensive and is predicted to drive similar morphological
adaptations and physiological trade‐offs in migratory bats and birds. Previous studies …

The present experiment tested if temperature during embryogenesis and parental heritage
affected the migratory behaviour of young brown trout Salmo trutta. Two parental forms were …

Every year, billions of wild diurnal songbirds migrate at night. To do so, they shift their daily
rhythm from diurnality to nocturnality. In captivity this is observed as a gradual transition of …

Variation in wing morphology results from the combination of diverse selection pressures.
Wing feather morphology within species varies with sex and ontogenetic effects, and also …

Aim In temperate mountain ranges, sharp spatial variations in habitat heterogeneity and
climate provide a perfect study setup to assess genetic and phenotypic differentiation in bird …

According to classical prediction of aerodynamic theory, birds and other powered fliers that
migrate over long distances should have longer and more pointed wings than those that …

Recent climate change is altering the migratory behaviour of many bird species. An
advancement in the timing of spring events and a shift in the geographical distribution have …