Richard T. Holmes

TL;DR: New advances in satellite telemetry, genetic analyses and stable isotope chemistry are now making it possible to determine the population and geographical origin of individual birds, and the relevance of understanding migratory connectivity to ecological, evolutionary and conservation issues is considered.

TL;DR: Habitat-specific isotopic signatures indicate that the quality of winter habitats occupied by American redstarts determines their physical condition and spring departure dates, which in turn result in variable arrival schedules and condition on temperate breeding grounds.

TL;DR: Constraints imposed by the structure of the vegetation and by the types and abundances of prey determine the available foraging opportunities and may affect the foraging traits of birds that can successfully exploit a particular habitat, and hence influence the patterns of bird habitat selection and community structure.

TL;DR: A new synthesis of theoretical and empirical evidence is provided that elucidates and extends a mechanism of population regulation for species whose individuals preemptively use sites that differ in suitability.

TL;DR: Stable-isotope methodology has offered an opportunity to identify linkages between breeding and wintering sites, which facilitates understanding the complete annual cycle of birds, one of the poorest-understood events in a bird's life.