Carry‐over effects occur when processes in one season influence the success of an
individual in the following season. This phenomenon has the potential to explain a large …

Abstract. Understanding habitat quality for birds is crucial for ecologists and managers, but
few papers have explored the advantages and disadvantages of different ways to measure …

In the past 20 years the use of stable isotope analysis has become increasingly common in
ecological studies. In fact, in some instances these techniques have yielded remarkable …

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 …

Many studies have reported statistically significant associations between bird migratory
phenology and climatic variables, and, consequently, it is mostly accepted that recent shifts …

Abstract. Historically, studies of habitat selection have focused on quantifying how current
patterns of habitat occupancy influence condition and survival within a season. This …

Long-distance migratory organisms are under strong selection to migrate quickly. Stopovers
demand more time than flying and are used by individuals to refuel during migration, but the …

Billions of animals migrate each year. To successfully reach their destination, migrants must
have evolved an appropriate genetic program and suitable developmental, morphological …

Evidence is accumulating that winter habitats occupied by migratory birds produce
differences in individual condition that can carry over into subsequent stages of the annual …

When species occupy habitats that vary in quality, choice of habitat can be critical in
determining individual fitness. In most migratory species, juveniles migrate independently of …