It is well established that differences in migratory behavior between populations of songbirds
have a genetic basis but the actual genes underlying these traits remains largely unknown …

Abstract Background The turkey (Meleagris gallopavo) is an important agricultural species
and the second largest contributor to the world's poultry meat production. Genetic …

Characterizing patterns of evolution of genetic and phenotypic divergence between incipient
species is essential to understand how evolution of reproductive isolation proceeds. Hybrid …

Background Animal migration requires adaptations in morphological, physiological and
behavioural traits. Several of these traits have been shown to possess a strong heritable …

Local adaptation is an important process contributing to population differentiation which can
occur in continuous or isolated populations connected by various amounts of gene flow. The …

Topography and historical range expansion has formed a so-called migratory divide
between two subspecies of willow warbler (Phylloscopus trochilus) in central Scandinavia …

Sperm morphology is highly diversified among species and at higher taxonomic levels. In
birds, there is also increasing evidence of geographical differentiation in sperm traits within …

Migration is a phenological trait that has developed independently during the adaptive
history of many animal groups. Bird phylogeny reveals that a pendulation between …

Phenotype is affected by many factors, including but not limited to environment, conspecifics,
and genetics. Evidence of phenotypic variation is everywhere, some of which is controlled …

The return of individual birds to a specific area in successional years, ie philopatry, is a
remarkable behavioural trait. Here we report on the remarkably reversed: the complete …