Plasticity-led evolution is central to evolutionary theory. Although challenging to study in
nature, this process may be particularly apparent in novel environments such as cities. We …

The origin, distribution, and function of biological diversity are fundamental themes of
ecology and evolutionary biology. Research on birds has played a major role in the history …

The twenty-first century has witnessed an explosion in research on animal migration, in
large part due to a technological revolution in tracking and remote-sensing technologies …

The ecoevolutionary drivers of species niche expansion or contraction are critical for
biodiversity but challenging to infer. Niche expansion may be promoted by local adaptation …

Although the migration ecology of birds breeding in the Neotropics is still poorly studied
relative to that of their counterparts breeding at north-temperate latitudes, studies conducted …

Given the availability of genomic data to identify separately evolving groups of organisms,
many researchers establish species limits based on assessments of the extent of gene flow …

Range expansions—whether permanent or transient—strongly influence the distribution of
genetic variation in space. Monarch butterflies are best known for long‐distance seasonal …

Migratory animals exhibit traits that allow them to exploit seasonally variable habitats. In
environments where migration is no longer beneficial, such as oceanic islands, migration …

Aim While the evolution of seasonal migration and its association with biogeography have
been the subject of numerous studies, its influence on species diversification has rarely …

Seasonal migration is an underappreciated driver of animal diversification. Changes in
migratory behaviour may favour the establishment of sedentary founder populations and …