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

Abstract The North American Breeding Bird Survey (BBS) was established in 1966 in
response to a lack of quantitative data on changes in the populations of many bird species at …

Forest fragmentation, the disruption in the continuity of forest habitat, is hypothesized to be a
major cause of population decline for some species of forest birds because fragmentation …

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 …

Recent studies have shown that stable hydrogen isotope ratios (δD) in the tissues of animals
often correlate with δD of local precipitation. Here we examined the relationship between δD …

La determinación de la productividad poblacional de aves migratorias Neotropicales y la
evaluación de la calidad del hábitat para reproducción se han basado en densidades …

Non-native shrub species in the genus Tamarix (saltcedar, tamarisk) have colonized
hundreds of thousands of hectares of floodplains, reservoir margins, and other wetlands in …

We studied breeding songbird populations in a managed, predominantly forested
landscape, in southeastern Missouri. We determined differences in the relative abundance …

Partners in Flight (PIF) was created in 1990 in response to concern for declining populations
of Neotropical migratory songbirds (Robbins et al. 1986, Askins et al. 1990) and in the …

Ecotoxicology has focused almost exclusively on countries and ecosystems in temperate
zones. Tropical ecosystems, which combined contain as much as 75% of the global …