Avian plumage colors and ornaments are excellent models to study the endocrine
mechanisms linking sexually selected traits and individual parameters of quality and …

Hemoparasites can affect wild birds in numerous ways, but the role of infection occurrence
and intensity on bird physiology and morphology is still little known. Secondary sexual …

Recent evidence suggests that female ornaments can commonly act as signals. However,
how signaling functions might be affected by the tendency for reduced ornament elaboration …

Wildlife populations across the globe are poised to lose their natural habitat to urbanization,
yet there is limited information on how different species handle living in cities. Animals in …

Conspecific males and females of many species exhibit remarkable differences in colours,
so-called sexual dichromatism (SD). In general, males are brilliant and females are drab, but …