Speciation is a fundamental evolutionary process, the knowledge of which is crucial for
understanding the origins of biodiversity. Genomic approaches are an increasingly important …

Birds have for long been popular study objects in speciation research. Being easy to observe
in the field, they have traditionally been particularly important in studies of behavioural and …

As a case study for single‐nucleotide polymorphism (SNP) identification in species for
which little or no sequence information is available, we investigated several approaches to …

Hybridization in natural populations is strongly selected against when hybrid offspring have
reduced fitness. Here we show that, paradoxically, pairing with another species may offer the …

Interbreeding between species (hybridization) typically produces unfit offspring. Reduced
hybridization should therefore be favored by natural selection. However, this is difficult to …

Speciation is the combination of evolutionary processes that leads to the reproductive isolation
of different populations. We investigate the significance of sex-chromosome evolution on …

Homoploid hybrid speciation is thought to require unusual circumstances to yield reproductive
isolation from the parental species, and few examples are known from nature. Here, we …

The theory of reinforcement predicts that natural selection against the production of unfit hybrids
favours traits that increase assortative mating. Whether culturally inherited traits, such as …

Studies of reproductive isolation between homoploid hybrid species and their parent species
have rarely been carried out. Here we investigate reproductive barriers between a recently …

The typically repetitive nature of the sex-limited chromosome means that it is often excluded
from or poorly covered in genome assemblies, hindering studies of evolutionary and …