Migration movements connect breeding and non-breeding bird populations over the year.
Such links, referred to as migratory connectivity, have important implications for migratory …

Migration is one of the most energy-demanding behaviors observed in birds. Mitochondria
are the primary source of energy used to support these long-distance movements, yet how …

Date and latitude interact to determine photoperiod, the daily period of daylight. This
interaction has important implications for latitudinal migrants for whom daylight may be a …

Technological advances in migratory tracking tools have revealed a remarkable diversity in
migratory patterns. One such pattern is leapfrog migration, where individuals that breed …

When a single species evolves into multiple descendent species, some parts of the genome
can play a key role in the evolution of reproductive isolation while other parts flow between …

Background For many songbirds in North America, we lack movement details about the full
annual cycle, notably outside the breeding season. Understanding how populations are …

Although geolocator tracking of small passerines has become commonplace in the last two
decades, this tool is still underutilized for gathering natural history data of migration in many …

Seasonally breeding birds express variations of traits (phenotypic flexibility) throughout their
life history stages that represent adaptations to environmental conditions. Changes of body …

Numerous studies of spring migration have discovered that environmental conditions
experienced on the wintering grounds and/or during vernal migration itself can have “carry …

Previous work has demonstrated that there is extensive variation in the songs of White-
crowned Sparrow (Zonotrichia leucophrys) throughout the species range, including between …