This paper advances an hypothesis that the primary adaptive driver of seasonal migration is
maintenance of site fidelity to familiar breeding locations. We argue that seasonal migration …

Migration, broadly defined as directional movement to take advantage of spatially distributed
resources, is a dramatic behaviour and an important component of many life histories that …

The study of avian migration has reached sophisticated levels in many areas, including
ecology, behaviour, and physiology. Traditional discussions of the evolution of migration …

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 …

Tropical birds are relatively long-lived and produce few offspring, which develop slowly and
mature relatively late in life, the slow end of the life-history axis, whereas temperate birds lie …

Background Climatic change is expected to lead to changes in species' geographical
ranges. Adaptation strategies for biodiversity conservation require quantitative estimates of …

Molecular studies have enlightened our understanding of freshwater zooplankton
biogeography, yet questions remain regarding the scale and commonality of geographic …

Aim Avian migration strategies balance the costs and benefits of annual movements
between breeding and wintering grounds. If similar constraints affect a large numbers of …

We show that Streptomyces biogeography in soils across North America is influenced by the
regional diversification of microorganisms due to dispersal limitation and genetic drift …

An implicit assumption of speciation biology is that population differentiation is an important
stage of evolutionary diversification, but its significance as a rate-limiting control on …