Discontent about changes in species classifications has grown in recent years. Many of
these changes are seen as arbitrary, stemming from unjustified conceptual and …

Despite their evolutionary relevance, multispecies networks or syngameons are rarely
reported in the literature. Discovering how syngameons form and how they are maintained …

The Anseriformes is a well-known and widely distributed bird order, with more than 150
species in the world. This paper aims to revise the classification, determine the phylogenetic …

Background The impacts of hybridization on the process of speciation are manifold, leading
to distinct patterns across the genome. Genetic differentiation accumulates in certain …

Background Domestic goose breeds are descended from either the Swan goose (Anser
cygnoides) or the Greylag goose (Anser anser), exhibiting variations in body size …

Hybridization is increasingly recognized as a creative evolutionary force contributing to
adaptation and speciation. Homoploid hybrid speciation—the process in which hybridization …

Phylogenetic incongruence can be caused by analytical shortcomings or can be the result of
biological processes, such as hybridization, incomplete lineage sorting and gene …

Several studies have uncovered a highly heterogeneous landscape of genetic differentiation
across the genomes of closely related species. Specifically, genetic differentiation is often …

Hybridization has frequently been observed between wild and domestic species and can
substantially impact genetic diversity of both counterparts. Geese show some of the highest …

Many populations of birds depend on networks of sites to survive. Sufficient connectivity that
allows movement between the sites throughout the year is a critical requirement. We found …