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 …

Conservation efforts are most effective when we have complete demographic information for
a species of concern. Nevertheless, fundamental gaps in our knowledge of demography still …

Migratory bird needs must be met during four phases of the year: breeding season, fall
migration, wintering, and spring migration; thus, management may be needed during all four …

Our understanding of migratory birds' year‐round ecology and evolution remains patchy
despite recent fundamental advances. Periodic reviews focus future research and inform …

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 …

Conservation of migratory animals requires information about seasonal survival rates.
Identifying factors that limit populations, and the portions of the annual cycle in which they …

Many tropical habitats experience pronounced dry seasons, during which arthropod food
availability declines, potentially limiting resident and migratory animal populations. In …

Understanding how animals will adapt to climate change requires understanding how
climate variables influence their biology year round, and how events in different seasons …

As tropical forests are cleared, a greater proportion of migratory songbirds are forced to
winter in agricultural and disturbed habitats, which, if poorer in quality than natural forests …

Nearly 300 species of landbirds, whose populations total billions, migrate between the
Neotropics and North America. Many migratory populations are in steep decline, and …